[EN] NEW PROCESS FOR THE PREPARATION OF PHOSPHINIC ACID<br/>[FR] NOUVEAU PROCEDE POUR LA PREPARATION D'ACIDE PHOSPHINIQUE
申请人:ASTRAZENECA AB
公开号:WO2006038872A1
公开(公告)日:2006-04-13
A new process for the synthesis of a compound of formula [Chemical formula should be inserted here. Please see paper copy] wherein A represents O or N; R1 represents a C?1#191-C?6#191 alkyl; R2 and R3 each independently represents C?1#191-C?10#191 alkyl, optionally substituted or interrupted by cyclic C?3#191-C?6#191 alkyl, cyclic C?3#191-C?6#191 heteroalkyl, aryl or heteroaryl; and X is selected from F, Cl, Br, or I, by a halogenation procedure comprising the consecutive sequence of following reactions: a) dienalkylation; b) formation of a leaving group on the alcohol function; and c) halogenation, is provided by the present invention as well as the compounds obtainable by the process.
本发明提供了一种合成式为[化学式应在此处插入。请参阅纸质副本]的化合物的新工艺,其中A代表O或N; R1代表C?1#191-C?6#191烷基; R2和R3各自独立地表示C?1#191-C?10#191烷基,可选择地被环状C?3#191-C?6#191烷基,环状C?3#191-C?6#191杂烷基,芳基或杂芳基取代或中断; X从F、Cl、Br或I中选择,通过连续的反应序列进行卤化反应,包括:a) 二烯基化;b) 在醇功能上形成一个离去基团;c) 卤化反应,同时提供了通过该工艺获得的化合物。