Phosphine-Mediated [3+2] Cycloaddition Reactions of Ethyl 5,5-Diarylpenta-2,3,4-trienoates with Arylmethylidenemalononitriles and N-Tosylimines
摘要:
Ethyl 5,5-diaryipenta-2,3,4-trienoates were synthesized and utilized in the phosphine-mediated [3+2] cycloaddition reactions with arylmethylidenemalononitriles and N-tosylimines in the presence of tributylphosphine. These reactions provide an easy access to a variety of novel polysubstituted cyclopentenes or pyrrolidines in good to excellent yields under mild conditions.
Triflic imide-catalyzed cascade cycloaddition and Friedel–Crafts reaction of diarylvinylidenecyclopropanes with ethyl 5,5-diarylpenta-2,3,4-trienoate
作者:Wei Li、Min Shi
DOI:10.1039/b903965a
日期:——
Triflic imide-catalyzed cascade cycloaddition and FriedelâCrafts reaction of diarylvinylidenecyclopropanes with ethyl 5,5-diarylpenta-2,3,4-trienoates provided a variety of novel polycyclic ester derivatives in moderate to good yields under mild conditions.
Phosphine-Mediated [3+2] Cycloaddition Reactions of Ethyl 5,5-Diarylpenta-2,3,4-trienoates with Arylmethylidenemalononitriles and <i>N</i>-Tosylimines
作者:Xiao-Yang Guan、Min Shi
DOI:10.1021/jo802489t
日期:2009.3.6
Ethyl 5,5-diaryipenta-2,3,4-trienoates were synthesized and utilized in the phosphine-mediated [3+2] cycloaddition reactions with arylmethylidenemalononitriles and N-tosylimines in the presence of tributylphosphine. These reactions provide an easy access to a variety of novel polysubstituted cyclopentenes or pyrrolidines in good to excellent yields under mild conditions.