Synlett 2022; 33(15): 1570-1574
DOI: 10.1055/a-1865-2970
letter

Amine-Free O-Sulfonylation by a Combination of 4-Methylpyridine N-Oxide Catalyst with 4Å Molecular Sieves

Keisuke Yoshida
,
Yuma Matsumoto
,
Juo Masuda
,
Shinji Kitagaki
This work was supported by a Grant-in-Aid for Scientific Research (C) (JP20K06952) and the Uehara Memorial Foundation.


Abstract

An amine-free sulfonylation of various alcohols was developed that uses 4-methylpyridine N-oxide in the presence of 4Å molecular sieves at room temperature. This mild method gives various sulfonylated products in high yields, and can be applied to base-sensitive substrates.

Supporting Information



Publication History

Received: 11 May 2022

Accepted after revision: 31 May 2022

Accepted Manuscript online:
31 May 2022

Article published online:
23 June 2022

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