scholarly journals Scope and Mechanistic Analysis of the Enantioselective Synthesis of Allenes by Rhodium-Catalyzed Tandem Ylide Formation/[2,3]-Sigmatropic Rearrangement between Donor/Acceptor Carbenoids and Propargylic Alcohols

2012 ◽  
Vol 134 (37) ◽  
pp. 15497-15504 ◽  
Author(s):  
Zhanjie Li ◽  
Vyacheslav Boyarskikh ◽  
Jørn H. Hansen ◽  
Jochen Autschbach ◽  
Djamaladdin G. Musaev ◽  
...  
Keyword(s):  
Sigmatropic Rearrangement ◽  
Enantioselective Synthesis ◽  
Propargylic Alcohols ◽  
Mechanistic Analysis ◽  
Donor Acceptor

Visible light mediated, metal-free carbene transfer reactions of diazoalkanes with propargylic alcohols

2019 ◽  
Vol 55 (33) ◽  
pp. 4881-4884 ◽  
Author(s):  
Feifei He ◽  
Rene M. Koenigs
Keyword(s):  
Visible Light ◽  
Transfer Reactions ◽  
High Yield ◽  
Propargylic Alcohols ◽  
Metal Free ◽  
Sterically Demanding ◽  
Donor Acceptor ◽  
Carbene Transfer

The photolysis of donor–acceptor diazoalkanes in the presence of propargylic alcohols furnishes valuable, sterically demanding tetra-substituted cyclopropenes in high yield under metal-free conditions.

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