[EN] REAGENTS FOR ASYMMETRIC ALLYLATION, ALDOL, AND TANDEM ALDOL AND ALLYLATION REACTIONS<br/>[FR] REACTIFS POUR ALLYLATION ASYMETRIQUE, ALDOL, ALDOL DOUBLE ET REACTIONS D'ALLYLATION
申请人:UNIV COLUMBIA
公开号:WO2003074534A1
公开(公告)日:2003-09-12
A new class of reagents and method of use of the reagents in the reaction of the reagents with electrophilic compounds. The invention in one embodiment is directed to a method for the formation of an alcohol of the formula (I). The method includes reacting a reagent of the formula (II). with an aldehyde of the formula R10CHO to form the alcohol. X3 is one of O and C(R4)(R5). Each of X1 and X2 is independently O or N-R. Each of Ca and Cb is independently an achiral center, an (S) chiral center or an (R) chiral center. Ra and Rb are (i) each independently C1-10 alkyl, C6-10 aryl or C3-9 heteroaryl, or (ii) taken together to form a C3-C4 alkylene chain which together with Ca and Cb forms a 5-membered or 6-membered aliphatic ring. Rc and Rd are each independently hydrogen, C1-10 alkyl, C6-10 aryl or C3-9 heteroaryl. R is C1-10 alkyl, C6-10 aryl or C3-9 heteroaryl. Each of R1, R2, R3, R4, R5 is independently hydrogen, C1-C10 alkyl, C6-10 aryl, C3-9 heteroaryl, C1-10 alkoxy, C6-10 aryloxy, C1-10 dialkylamino, C1-10 alkyl-C6-10 arylamino, C1-10 diarylamino, or halogen. R6 is halogen, hydrogen, C1-10 alkyl, C6-10 aryl, C3-9 heteroaryl, C1-10 alkoxy, C6-10 aryloxy, C1-10 alkyl-C6-10 arylamino, C1-10 diarylamino, OSO2CF3 or SR. R10 may be C1-10 alkyl, C6-10 aryl, or C3-9 heteroaryl.
一种新的试剂类别及其在与亲电性化合物反应中的使用方法。在一种实施例中,本发明涉及一种制备式(I)醇的方法。该方法包括将式(II)试剂与式R10CHO的醛反应以形成醇。其中,X3为O和C(R4)(R5)中的一种。X1和X2各自独立地为O或N-R。Ca和Cb各自独立地为无手性中心、(S)手性中心或(R)手性中心。Ra和Rb为(i)各自独立地为C1-10烷基、C6-10芳基或C3-9杂芳基,或(ii)一起形成C3-C4烷基链,该链与Ca和Cb一起形成5-或6-成员的脂环。Rc和Rd各自独立地为氢、C1-10烷基、C6-10芳基或C3-9杂芳基。R为C1-10烷基、C6-10芳基或C3-9杂芳基。R1、R2、R3、R4、R5各自独立地为氢、C1-C10烷基、C6-10芳基、C3-9杂芳基、C1-10烷氧基、C6-10芳氧基、C1-10二烷基氨基、C1-10烷基-C6-10芳基氨基、C1-10二芳基氨基或卤素。R6为卤素、氢、C1-10烷基、C6-10芳基、C3-9杂芳基、C1-10烷氧基、C6-10芳氧基、C1-10烷基-C6-10芳基氨基、C1-10二芳基氨基、OSO2CF3或SR。R10可以是C1-10烷基、C6-10芳基或C3-9杂芳基。