Abstract: A process is used for the preparation of 1,3,2-oxazaborolidine compounds. This process prepares compounds of formula (I) or (IA): in which: R1 is an alkyl or an aryl; and R2, R3, R4 and R5 are especially a hydrogen atom or an alkyl, wherein the following are reacted in two steps: a) a boric precursor compound with an acetal compound to give a boronate compound; and b) the boronate compound with an amino alcohol compound. This process avoids by-products and exhibits a very good stereospecificity.

Abstract: An in situ or one-pot process for the preparation of the compounds of formula (I) uses a compound of general formula (I): and includes: a) the hydrogenation of a nitrile group of the compound of general formula (II): in which R1 to R4 are especially H or alkyl and n varies from 0 to 4, in the presence of a hydrogenation catalyst, a methylating agent and an organic acid as solvent, and at a temperature Ta below the initiation temperature of a reductive amination reaction, to give a primary amine from the nitrile group; and b) the reductive amination of the primary amine in the presence of hydrogen, at a temperature Tb above Ta, to give the dimethylated amine of general formula (I) by activation of the methylating age.

Abstract: The invention provides the diastereoselective alkylation of optically active nopinone to form the compound of formula (I) according to scheme A below: in which: R is a C5-15 alkyl group; R1 is especially a C1-15 alkyl, C2-15 alkenyl or C2-15 alkynyl group or a C5-15 aryl, each group optionally being substituted; and X is a halogen atom; and the configuration of the compound of formula (I) is either (E) or (Z) or a mixture of the two. The compound of formula (I) is a valuable synthetic intermediate.

Abstract: A process is for the preparation of optically active substituted alpha-indanyl amide derivatives of formula (I), which include: an asymmetric hydrogenation reaction of an en-amide derivative of formula (III) in presence of hydrogen and an optically active catalyst, in order to obtain an amide derivative of formula (II), a hydrolysis reaction of the amide derivative of formula (II) obtained in the previous step, in order to obtain optically active-substituted alpha-indanyl amide derivatives of formula (I).

Abstract: A process for the production of ene-amide derivatives represented by the formula (I) wherein R1 and R2 and R3 are independently a hydrogen atom, an alkyl, a cycloalkyl, a cycloalkylalkyl, an alkylaryl, an aryl, a heterocycle, a cyano, an alkoxy, an aryloxy, a carboxyl, a carbamoyl, —CONR5R6 (in which R5 and R6 are independently an alkyl, arylalkyl or aryl group said ring being substituted being substituted or not with a functional group or with R5) or —COOR5 group (in which R5 is an alkyl, alkylaryl or aryl group), said alkyl, cycloalkyl, cycloalkylalkyl, alkylaryl and aryl groups being substituted or not with a functional group or with R5; or R1 and R2 taken together, may form a ring (which terms includes mono-, di- and higher polycyclic ring systems); R4 is a hydrogen atom, an alkyl, an aryl, an alkylaryl, said groups substituted or not with a halogen atom as Cl, Br, or F; X is an oxygen atom or a leaving group and m is an integer 1 or 2; when m is 1 then X is a leaving group; when m is 2 then X is a o

Abstract: A process for the in situ preparation of chiral compounds derived from oxazaborolidine-borane complexes, wherein a metal borohydride, a Lewis base and an inorganic acid ester are brought together and an optically active amino alcohol and optionally a halide are then added. The compound obtained is a complex that is useful as a catalyst in asymmetric reduction reactions. The reaction is performed by adding the substance to be reduced, particularly prochiral ketones or ether oximes, in order to synthesize chiral alcohols or chiral amines.

Abstract: 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:

Abstract: A method for preparing a thiazolidinedione, oxazolidinedione or hydantoin compound of formula (I) from a compound of formula (II): wherein Q represents an oxygen atom or a sulfur atom; Q1 represents an oxygen atom or a sulfur atom; R1 and R2, which can be identical or different, represent a hydrogen atom, a C1-10 alkyl chain, a cycloalkyl, an alkylaryl, an arylalkyl; the alkyl, cycloalkyl, alkylaryl or arylalkyl groups being optionally substituted by an alkyl, an alkoxy or aryloxy, a halogen, a hydroxy, a sulfino, a sulfonyl, an amino such as NH2, NHR3, N(R3)2, wherein R3 represents an alkyl, an alkoxy or an alkylcarbonyl, reacting a compound of formula (II) with formic acid, either as a hydrogen donor in a hydrogen-transfer reaction or as a solvent in a hydrogenation reaction, in the presence of a catalyst containing a transition metal to obtain a corresponding compound of formula (I).

Abstract: 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-

Abstract: A method for preparing a thiazolidinedione, oxazolidinedione or hydantoin compound of formula (I) from a compound of formula (II): 1

Abstract: A method for preparing pyrrolidine derivatives comprising cyclizing a compound of formula (I): 1

Abstract: A (R) or (S) chiral diphosphine of formula (I): 1