Synlett 2020; 31(16): 1587-1592
DOI: 10.1055/s-0040-1707909
letter
© Georg Thieme Verlag Stuttgart · New York

DBU-Catalyzed Rearrangement of Secondary Propargylic Alcohols: An Efficient and Cost-Effective Route to Chalcone Derivatives

Rimpa De
a   Department of Chemistry, Indian Institute of Engineering Science and Technology (IIEST), Shibpur P.O.-Botanic Garden, Howrah-711 103 (WB), India
,
Antony Savarimuthu
b   Department of Chemistry, St. Xavier’s College (Autonomous), Palayamkottai, Tamil Nadu-627 002, India
,
Tamal Ballav
a   Department of Chemistry, Indian Institute of Engineering Science and Technology (IIEST), Shibpur P.O.-Botanic Garden, Howrah-711 103 (WB), India
,
Pijush Singh
a   Department of Chemistry, Indian Institute of Engineering Science and Technology (IIEST), Shibpur P.O.-Botanic Garden, Howrah-711 103 (WB), India
,
Jayanta Nanda
a   Department of Chemistry, Indian Institute of Engineering Science and Technology (IIEST), Shibpur P.O.-Botanic Garden, Howrah-711 103 (WB), India
,
Avantika Hasija
c   Department of Chemistry, Indian Institute of Science Education and Research (IISER) Bhopal, Bhauri, Bhopal-462066, India   eMail: mrinalkbera26@gmail.com
,
Deepak Chopra
c   Department of Chemistry, Indian Institute of Science Education and Research (IISER) Bhopal, Bhauri, Bhopal-462066, India   eMail: mrinalkbera26@gmail.com
,
a   Department of Chemistry, Indian Institute of Engineering Science and Technology (IIEST), Shibpur P.O.-Botanic Garden, Howrah-711 103 (WB), India
› Institutsangaben
Financial support from CSIR New Delhi [Grant No: 02(0270)/16/EMR-II] is most gratefully acknowledged.
Weitere Informationen

Publikationsverlauf

Received: 06. Mai 2020

Accepted after revision: 22. Juni 2020

Publikationsdatum:
24. Juli 2020 (online)


Abstract

A 1,8-diazabicyclo[5.4.0]undec-7-ene (DBU)-catalyzed rearrangement of diarylated secondary propargylic alcohols to give α,β-unsaturated carbonyl compounds has been developed. The typical 1,3-transposition of oxy functionality, characteristic of Mayer–Schuster rearrangements, is not observed in this case. A broad substrate scope, functional-group tolerance, operational simplicity, complete atom economy, and excellent yields are among the prominent features of the reaction. Additionally, the photophysical properties and crystal-structure-packing behavior of selected compounds were investigated and found to be of interest.

Supporting Information