摘要:
The present invention relates to a process for preparing Lomitapide or its pharmaceutically acceptable salt thereof having high purity with acceptable levels of impurities.
摘要:
Provided is a one-step efficient production method for an α,α-difluoroamine of a general formula (1) from an amide compound. The method is an economical method capable of producing the intended α,α-difluoroamine at high yield by reacting a starting amide compound with carbonyl fluoride and/or oxalyl fluoride under a specific condition.
摘要:
A process for the preparation of a piperazine derivative represented by formula (V) which comprises reacting 1-methyl-3-phenylpiperazine with 2-chloro-3-cyanopyridine in the presence of a base and an alkali metal halide in an aprotic polar organic solvent. This piperazine derivative and its oxalate are useful as intermediates for the preparation of mirtazapine.
摘要:
The present invention provides processes for the preparation of amino-aryl iodides wherein a micronized amino-aryl compounds is reacted with an iodinating reagent.
摘要:
The invention relates to a method for producing 4-bromine-aniline derivatives of formula (I), wherein the substituents have the following meanings: R1: C1-C6-alkyl, C1-C6-halogenalkyl, C1-C6-alkoxy, C1-C6-halogen-alkoxy, C3-C8-cycloalkyl, halogen; R2: C1-C6-alkyl, C1-C6-alkoxy, C3-C8-cycloalkyl, C2-C6-alkenyl, cyano or a heterocyclic radical.
摘要:
Die vorliegende Erfindung betrifft ein Verfahren zur Herstellung von Perfluoralkylanilinen und deren Anwendung zur Herstellung von Wirkstoffen insbesondere für Agrochemikalien.
摘要翻译:全氟烷基苯胺衍生物(I)的制备包括使苯胺(II)与二卤代全氟烷烃(III)反应并使中间产物(IV)与离子氟化物反应。 式(I)的全氟烷基苯胺衍生物的制备包括使式(II)的苯胺与式(III)的二卤氟烷烃反应并使式(IV)的中间产物与离子氟化物反应。 R1,R2 = H,1-12C烷基,COR,COOR'或6-15C芳烷基,或NR1R2是4-16C环或NCO; R = 1-12C烷基,5-14C芳基或6-15C芳烷基; R'= R或2-12C烯基; R3-R6 = F或1-12C全氟烷基,或两个可以形成4-20C全氟环烷基; n = 1或2; R7 = R,OH,Cl,Br,F,NO2,CN,任选保护的甲酰基,1-12C卤代烷基,ABDE,AE,A-SO2-E,AB-SO2R9,A-SO3W或A-COW, 对于5-12C的环状基团; A = 1-8C亚烷基或不存在; B = O,S或NR8或不存在; D = CO; E = R9,OR9,NHR10或N(R10)2; R8 = H,1-8C烷基,5-14C芳基或6-15C芳烷基; R9 = 1-8C烷基,1-8C卤代烷基,5-14C芳基或6-15C芳烷基; R10 = 1-8C烷基,6-15C芳烷基或6-14C芳基,或N(R10)2为4-12C环氨基; W = OH,NH 2或OM; M =碱(ne earth)金属,NH4或有机铵; m = 0-5; Hal1,Hal2 = Cl,Br或I.还包括化合物(IV)的独立权利要求。