Asymmetric Addition of Arylboronic Acids to Cumulene Derivatives Catalyzed by Axially Chiral N-Heterocyclic Carbene-Pd2+ Complexes
作者:Zhen Liu、Peng Gu、Min Shi
DOI:10.1002/chem.201100703
日期:2011.5.16
Cumulene+carbene=chirality! Asymmetricadditions of boronic acids to cumulenederivatives, catalyzed by an N‐heterocyclic carbene–palladium complex, provide the desired allenic products in good to excellent yields and moderate to good enantioselectivities. These optically active allenic adducts can be further transformed to useful chiral products in good yields and with an intact chirality (see scheme)
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.
Luckenbach,R.; Mueller,N., Zeitschrift fur Naturforschung, Teil B: Anorganische Chemie, Organische Chemie, 1979, vol. 34, p. 464 - 480
作者:Luckenbach,R.、Mueller,N.
DOI:——
日期:——
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.
Kostikov; Varakin; Molchanov, Russian Journal of Organic Chemistry, 1996, vol. 32, # 3, p. 348 - 352