Method for obtaining 4,4'-diformyldiphenylalkane

FIELD: chemistry.

SUBSTANCE: claimed invention relates to method for obtaining 4,4'-diformyldiphenylalkane, represented by means of the following formula (2), which is suitable as different industrial chemical initial substances and in production of initial substances for medications, agrochemicals, optic and electronic functional materials. Method includes formylation of diphenylalkane, represented by means of the following formula (1), with carbon monoxide in presence of fluorohydrogen and boron trifluoride, in which temperature of formylation reaction constitutes from -50 to 5C, from 5 to 30 mol of fluorohydrogen are used per 1 mol of diphenylalkane and from 1.5 to 5 mol of boron trifluoride are used per 1 mol of diphenylalkane:

in which R represents alkanediyl group, containing from 1 to 6 carbon atoms, in which R represents alkanediyl group, containing from 1 to 6 carbon atoms.

EFFECT: claimed method makes it possible to obtain target products with high degree of purity and with high output.

6 cl, 1 tbl, 8 ex

 



 

Same patents:

FIELD: chemistry.

SUBSTANCE: present invention relates to a method of producing 4-(4-alkylcyclohexyl)benzaldehyde or 4-(cyclohexyl)benzaldehyde, which can be used in chemical products used in materials for electronic equipment, including liquid crystals, and for pharmaceutical and agrochemical application. The invention also relates to versions of a method of producing 4-(trans-4-alkylcyclohexyl)benzaldehyde and a method of producing (trans-4-alkylcyclohexyl)benzene. The method of producing 4-(4-alkylcyclohexyl)benzaldehyde or 4-(cyclohexyl)benzaldehyde involves formylation of a benzene derivative of formula (1a) with carbon monoxide in the presence of hydrogen fluoride and boron trifluoride where R1 denotes an alkyl group containing 1-10 carbon atoms or a hydrogen atom. The hydrogen fluoride is used in amount of not less than 3 moles but not more than 20 moles, and boron trifluoride is used in amount of not less than 1.1 moles but not more than 5 moles per mole of the benzene derivative of formula (1a), and formylation is carried out at temperature from -50C to 30C.

EFFECT: invention enables selective synthesis of desired products with high purity.

10 cl, 15 ex

FIELD: chemistry.

SUBSTANCE: present invention relates to a method of producing 2,6-dimethyl-1-naphthaldehyde which is used in industrial chemical materials and raw materials for pharmaceutical products, pesticides, optical functional materials and electronic functional materials. The method involves formylation of 2,6-dimethylnaphthalene with carbon monoxide in the presence of hydrogen fluoride in terms of moles in amount ranging from 5- to 100-fold and boron trifluoride in terms of moles in amount ranging from 0.5- to 3.5-fold compared to the amount of 2,6-dimethylnaphthalene, and at reaction temperature ranging from 35 to 70C.

EFFECT: method enables to obtain and end product with high selectivity.

15 ex

The invention relates to organic chemistry, namely, the method of production of triptycene derivatives, in particular the production of Tris-formylrifamycin with substituents in positions of three different rings triptycene fragment

FIELD: chemistry.

SUBSTANCE: present invention relates to a method of producing 4-(4-alkylcyclohexyl)benzaldehyde or 4-(cyclohexyl)benzaldehyde, which can be used in chemical products used in materials for electronic equipment, including liquid crystals, and for pharmaceutical and agrochemical application. The invention also relates to versions of a method of producing 4-(trans-4-alkylcyclohexyl)benzaldehyde and a method of producing (trans-4-alkylcyclohexyl)benzene. The method of producing 4-(4-alkylcyclohexyl)benzaldehyde or 4-(cyclohexyl)benzaldehyde involves formylation of a benzene derivative of formula (1a) with carbon monoxide in the presence of hydrogen fluoride and boron trifluoride where R1 denotes an alkyl group containing 1-10 carbon atoms or a hydrogen atom. The hydrogen fluoride is used in amount of not less than 3 moles but not more than 20 moles, and boron trifluoride is used in amount of not less than 1.1 moles but not more than 5 moles per mole of the benzene derivative of formula (1a), and formylation is carried out at temperature from -50C to 30C.

EFFECT: invention enables selective synthesis of desired products with high purity.

10 cl, 15 ex

FIELD: chemistry.

SUBSTANCE: present invention relates to a method of producing 2,6-dimethyl-1-naphthaldehyde which is used in industrial chemical materials and raw materials for pharmaceutical products, pesticides, optical functional materials and electronic functional materials. The method involves formylation of 2,6-dimethylnaphthalene with carbon monoxide in the presence of hydrogen fluoride in terms of moles in amount ranging from 5- to 100-fold and boron trifluoride in terms of moles in amount ranging from 0.5- to 3.5-fold compared to the amount of 2,6-dimethylnaphthalene, and at reaction temperature ranging from 35 to 70C.

EFFECT: method enables to obtain and end product with high selectivity.

15 ex

FIELD: chemistry.

SUBSTANCE: present invention relates to a method of producing glycol aldehyde, involving reaction of formaldehyde with hydrogen and carbon monoxide in the presence of a catalyst composition, which is based on a) rhodium source, b) ligand with general formula R1P-R2 (I), where R1 is a bivalent radical, which, together with the phosphorous atom to which it is bonded, is 2-phospha-1,3,5,7-tetraC1-20alkyl-6,9,10-trioxatricyclo[3.3.1.1{3,7}]decile group, and where R2 is a monovalent radical, which is chosen from an alkyl group, containing 4 to 34 carbon atoms or a radical with general formula: -R3-C(O)NR4R5 (II), where R3 represents methylene, ethylene, propylene or butylene, and R4 and R5 independently represent an alkyl group containing 1 to 22 carbon atoms, and c) anion source. The invention also relates to a catalyst composition used in the production of glycol aldehyde, and to a method of producing ethylene glycol from glycol aldehyde obtained using the described method.

EFFECT: easy conversion of formaldehyde to glycol aldehyde in the presence of a stable catalyst.

6 cl, 11 ex

FIELD: chemistry.

SUBSTANCE: present invention relates to a method of producing glycol aldehyde, involving reaction of formaldehyde with hydrogen and carbon monoxide in the presence of a catalyst composition, which is based on a) rhodium source, b) ligand with general formula R1P-R2 (I), where R1 is a bivalent radical, which, together with the phosphorous atom to which it is bonded, is 2-phospha-1,3,5,7-tetraC1-20alkyl-6,9,10-trioxatricyclo[3.3.1.1{3,7}]decile group, and where R2 is a monovalent radical, which is chosen from an alkyl group, containing 4 to 34 carbon atoms or a radical with general formula: -R3-C(O)NR4R5 (II), where R3 represents methylene, ethylene, propylene or butylene, and R4 and R5 independently represent an alkyl group containing 1 to 22 carbon atoms, and c) anion source. The invention also relates to a catalyst composition used in the production of glycol aldehyde, and to a method of producing ethylene glycol from glycol aldehyde obtained using the described method.

EFFECT: easy conversion of formaldehyde to glycol aldehyde in the presence of a stable catalyst.

6 cl, 11 ex

FIELD: chemistry.

SUBSTANCE: present invention relates to a method of producing 2,6-dimethyl-1-naphthaldehyde which is used in industrial chemical materials and raw materials for pharmaceutical products, pesticides, optical functional materials and electronic functional materials. The method involves formylation of 2,6-dimethylnaphthalene with carbon monoxide in the presence of hydrogen fluoride in terms of moles in amount ranging from 5- to 100-fold and boron trifluoride in terms of moles in amount ranging from 0.5- to 3.5-fold compared to the amount of 2,6-dimethylnaphthalene, and at reaction temperature ranging from 35 to 70C.

EFFECT: method enables to obtain and end product with high selectivity.

15 ex

FIELD: chemistry.

SUBSTANCE: present invention relates to a method of producing 4-(4-alkylcyclohexyl)benzaldehyde or 4-(cyclohexyl)benzaldehyde, which can be used in chemical products used in materials for electronic equipment, including liquid crystals, and for pharmaceutical and agrochemical application. The invention also relates to versions of a method of producing 4-(trans-4-alkylcyclohexyl)benzaldehyde and a method of producing (trans-4-alkylcyclohexyl)benzene. The method of producing 4-(4-alkylcyclohexyl)benzaldehyde or 4-(cyclohexyl)benzaldehyde involves formylation of a benzene derivative of formula (1a) with carbon monoxide in the presence of hydrogen fluoride and boron trifluoride where R1 denotes an alkyl group containing 1-10 carbon atoms or a hydrogen atom. The hydrogen fluoride is used in amount of not less than 3 moles but not more than 20 moles, and boron trifluoride is used in amount of not less than 1.1 moles but not more than 5 moles per mole of the benzene derivative of formula (1a), and formylation is carried out at temperature from -50C to 30C.

EFFECT: invention enables selective synthesis of desired products with high purity.

10 cl, 15 ex

FIELD: chemistry.

SUBSTANCE: claimed invention relates to method for obtaining 4,4'-diformyldiphenylalkane, represented by means of the following formula (2), which is suitable as different industrial chemical initial substances and in production of initial substances for medications, agrochemicals, optic and electronic functional materials. Method includes formylation of diphenylalkane, represented by means of the following formula (1), with carbon monoxide in presence of fluorohydrogen and boron trifluoride, in which temperature of formylation reaction constitutes from -50 to 5C, from 5 to 30 mol of fluorohydrogen are used per 1 mol of diphenylalkane and from 1.5 to 5 mol of boron trifluoride are used per 1 mol of diphenylalkane:

in which R represents alkanediyl group, containing from 1 to 6 carbon atoms, in which R represents alkanediyl group, containing from 1 to 6 carbon atoms.

EFFECT: claimed method makes it possible to obtain target products with high degree of purity and with high output.

6 cl, 1 tbl, 8 ex

FIELD: chemistry.

SUBSTANCE: invention relates to a novel aromatic aldehyde represented by the formula

having a branched alkyl group containing from 10 to 14 carbon atoms and to the method for its production, to an epoxy resin curing composition comprising a polyamine compound and the claimed aromatic aldehyde, to the compositions based on epoxy resin for coating, of civil engineering and construction, containing the claimed curing composition, to the cured coating film and to the cured material. In formula (II), each of the groups R1 and R2 independently represents an alkyl group having 1 to 12 carbon atoms, and the total number of carbon atoms in the groups R1 and R2 is from 9 to 13.

EFFECT: improving the properties of aldehyde.

9 cl, 12 dwg, 2 tbl, 15 ex

FIELD: chemistry.

SUBSTANCE: present invention relates to a method of producing 2,6-dimethyl-1-naphthaldehyde which is used in industrial chemical materials and raw materials for pharmaceutical products, pesticides, optical functional materials and electronic functional materials. The method involves formylation of 2,6-dimethylnaphthalene with carbon monoxide in the presence of hydrogen fluoride in terms of moles in amount ranging from 5- to 100-fold and boron trifluoride in terms of moles in amount ranging from 0.5- to 3.5-fold compared to the amount of 2,6-dimethylnaphthalene, and at reaction temperature ranging from 35 to 70C.

EFFECT: method enables to obtain and end product with high selectivity.

15 ex

FIELD: chemistry.

SUBSTANCE: present invention relates to a method of producing 4-(4-alkylcyclohexyl)benzaldehyde or 4-(cyclohexyl)benzaldehyde, which can be used in chemical products used in materials for electronic equipment, including liquid crystals, and for pharmaceutical and agrochemical application. The invention also relates to versions of a method of producing 4-(trans-4-alkylcyclohexyl)benzaldehyde and a method of producing (trans-4-alkylcyclohexyl)benzene. The method of producing 4-(4-alkylcyclohexyl)benzaldehyde or 4-(cyclohexyl)benzaldehyde involves formylation of a benzene derivative of formula (1a) with carbon monoxide in the presence of hydrogen fluoride and boron trifluoride where R1 denotes an alkyl group containing 1-10 carbon atoms or a hydrogen atom. The hydrogen fluoride is used in amount of not less than 3 moles but not more than 20 moles, and boron trifluoride is used in amount of not less than 1.1 moles but not more than 5 moles per mole of the benzene derivative of formula (1a), and formylation is carried out at temperature from -50C to 30C.

EFFECT: invention enables selective synthesis of desired products with high purity.

10 cl, 15 ex

FIELD: chemistry.

SUBSTANCE: claimed invention relates to method for obtaining 4,4'-diformyldiphenylalkane, represented by means of the following formula (2), which is suitable as different industrial chemical initial substances and in production of initial substances for medications, agrochemicals, optic and electronic functional materials. Method includes formylation of diphenylalkane, represented by means of the following formula (1), with carbon monoxide in presence of fluorohydrogen and boron trifluoride, in which temperature of formylation reaction constitutes from -50 to 5C, from 5 to 30 mol of fluorohydrogen are used per 1 mol of diphenylalkane and from 1.5 to 5 mol of boron trifluoride are used per 1 mol of diphenylalkane:

in which R represents alkanediyl group, containing from 1 to 6 carbon atoms, in which R represents alkanediyl group, containing from 1 to 6 carbon atoms.

EFFECT: claimed method makes it possible to obtain target products with high degree of purity and with high output.

6 cl, 1 tbl, 8 ex

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