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Catalysis by β‐Cyclodextrin Hydrate – Synthesis of 2,2‐Disubstituted 2 H ‐Chromenes in Aqueous Medium
Author(s) -
Ghatak Avishek,
Khan Sagar,
Bhar Sanjay
Publication year - 2016
Publication title -
advanced synthesis and catalysis
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.541
H-Index - 155
eISSN - 1615-4169
pISSN - 1615-4150
DOI - 10.1002/adsc.201500358
Subject(s) - chemistry , cyclodextrin , propargyl , catalysis , hydrate , phenols , aqueous solution , aqueous medium , organic chemistry , one pot synthesis , photochromism , combinatorial chemistry
A cost‐effective, operationally simple and eco‐compatible protocol for the one‐pot synthesis of photochromic pyrans by the reaction of propargyl alcohols as well as propargyl ethers with differently substituted phenols under ambient atmosphere in aqueous medium has been developed using β‐cyclodextrin hydrate as an efficient, recyclable and stable catalyst. This is the first report where β‐cyclodextrin hydrate acted as a catalyst for an organic transformation but β‐cyclodextrin alone failed.