摘要:
A method for preparing pyrrolidine derivatives comprising cyclizing a compound of formula (I): in the presence of: a) a catalyst, b) a primary amine and c) a base, in a solvent to obtain pyrrolidine derivative of formula (II) below:
摘要:
An (R) or (S) chiral diphosphine of formula (I): wherein R and R1, which can be identical or different, represent an optionally saturated C1-10 alkyl group, an optionally saturated C3-9 cycloalkyl group, a C5-10 aryl group, the groups being optionally substituted by a halogen, a hydroxy, a C1-5 alkoxy, an amino, a sulfino, a sulonfyl, with R4 representing an alkyl, an alkoxy or an alkylcarbonyl, the alkyl, cycloalkyl, aryl groups optionally including one or more heteroatoms, or R and R1 together represent an optionally saturated C2-6 substituted alkyl group, an optionally saturated C3-9 cycloalkyl group, a C5-10 aryl group, the cycloalkyl or aryl groups being optionally substituted by a C1-5 alkyl, a halogen, a hydroxy, a C1-5 alkoxy, an amino, a sulfino, a sulonfyl, with R4 representing an alkyl, an alkoxy or an alkylcarbonyl, the alkyl, cycloalkyl, aryl groups optionally including one or more heteroatoms, R2 and R3, which can be identical or different, represent an optionally saturated C3-8 cycloalkyl group, a C6-10 aryl group, the groups being optionally substituted by a halogen, a hydroxy, a C1-5 alkoxy, an amino, a sulfino, a sulonfyl, with R4 representing an alkyl, an alkoxy or an alkylcarbonyl, the cycloalkyl, aryl groups optionally including one or more heteroatoms, or R2 and R3 together form an optionally saturated C4-8 cyclic group, a C6-10 aryl group, the groups being optionally substituted by a halogen, a hydroxy, a C1-5 alkoxy, an amino, a sulfino, a sulonfyl, with R4 representing an alkyl, an alkoxy or an alkylcarbonyl, the cyclic and aryl groups optionally including one or more heteroatoms.
摘要:
Process for the preparation of cericlamine which consists: i) in arylating methacrylic acid with the diazonium chloride of 3,4-dichloroaniline, to obtain (+/-)2-chloro-3-(3,4-dichlorophenyl)-2-methylpropionic acid, ii) in aminating the acid with dimethylamine, to obtain (+/-)3-(3,4-dichlorophenyl)-2-dimethylamino-2-methylpropionic acid, or an alkaline metal salt thereof, iii) in esterifying the amino-acid or its salt, then, iv) in reducing the ester by a metal or organometal hydride to obtain (+/-)3-(3,4-dichlorophenyl)-2-dimethylamino-2-methyl-propan-1-ol.
摘要:
Manganese bromide solution for use in the formation of organomanganese compounds, applicable to the synthesis of organic products, particularly ketones.