Regio- and
stereoselectivity in the concatenated enyne cross
metathesis-metallotropic 1,3 -shift of terminal 1,3-diyne.
K.-P. Wang
E.J. Cho
S.Y. Yun
J.Y. Rheea
D. Lee
10027/19929
https://indigo.uic.edu/articles/journal_contribution/Regio-_and_stereoselectivity_in_the_concatenated_enyne_cross_metathesis-metallotropic_1_3_-shift_of_terminal_1_3-diyne_/10768853
Enyne cross metathesis of terminal 1,3-diynes with various alkenes afforded two products of distinctive connectivity, as the result of a uniform mode of initiation but different modes of termination events with or without metallotropic [1,3]-shift. Steric and electronic factors of the substituents on the 1,3-diynes play an important role in controlling the metallotropic [1,3]-shift of the propagating alkylidene intermediates and their regioselective trapping to the final products. © 2013 Elsevier Ltd. All rights reserved.
2018-01-09 00:00:00
Enyne metathesis
Metallotropic shift
1,3-Diyne