A continuous flow synthesis and derivatization of 1,2,4-thiadiazoles.

Abstract:

:A continuous flow process is presented that enables the efficient synthesis and derivatization of 1,2,4-thiadiazole heterocycles. Special attention was given to the safe handling of the versatile yet hazardous trichloromethane sulfenylchloride reagent including its in-line quenching in order to eliminate malodourous and corrosive by-products. Based on this flow method gram quantities of 5-chloro-3-phenyl-1,2,4-thiadiazole were safely prepared allowing for further elaboration of this valuable building block by reaction with different nitrogen-, sulfur- and oxygen-based nucleophiles. This synthetic approach was subsequently applied to generate a series of bromophenyl-5-chloro-1,2,4-thiadiazoles providing a valuable entry towards further structural diversification on this important heterocyclic scaffold.

journal_name

Bioorg Med Chem

authors

Baumann M,Baxendale IR

doi

10.1016/j.bmc.2017.01.022

subject

Has Abstract

pub_date

2017-12-01 00:00:00

pages

6218-6223

issue

23

eissn

0968-0896

issn

1464-3391

pii

S0968-0896(17)30090-1

journal_volume

25

pub_type

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