2<i>H</i>-Chromenes from Salicylaldehydes by
a Catalytic Petasis Reaction
Qian Wang
M. G. Finn
10.1021/ol006710r.s001
https://acs.figshare.com/articles/journal_contribution/2_i_H_i_-Chromenes_from_Salicylaldehydes_by_a_Catalytic_Petasis_Reaction/3737553
The Petasis condensation of vinylic or aromatic boronic acids, aromatic aldehydes, and amines is assisted by a hydroxy group adjacent to
the aldehyde moiety. The products derived from salicylaldehydes and vinylboronic acids undergo cyclization to 2<i>H</i>-chromene compounds
with ejection of amine upon heating. A catalytic preparation of 2<i>H</i>-chromenes using resin-bound amine is reported, allowing the convenient
incorporation of a variety of components.
2000-11-21 00:00:00
chromene
vinylboronic
amine
acid
moiety
Chromene
variety
cyclization
aldehyde
amines
Catalytic Petasis Reaction
component
incorporation
compound
Salicylaldehyde
condensation
2 H
ejection
heating
vinylic
preparation
boronic
salicylaldehyde
hydroxy