Köse A, Ünal A, Şahin E, Bozkaya U, Kara Y. An anomalous addition of chlorosulfonyl isocyanate to a carbonyl group: the synthesis of ((3a
S,7a
R,
E)-2-ethyl-3-oxo-2,3,3a,4,7,7a-hexahydro-1
H-isoindol-1-ylidene)sulfamoyl chloride.
Beilstein J Org Chem 2019;
15:931-936. [PMID:
31164929 PMCID:
PMC6541324 DOI:
10.3762/bjoc.15.89]
[Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/25/2018] [Accepted: 03/15/2019] [Indexed: 11/28/2022] Open
Abstract
In this study, we developed a new addition reaction of chlorosulfonyl isocyanate (CSI), starting from 2-ethyl-3a,4,7,7a-tetrahydro-1H-isoindole-1,3(2H)-dione. The addition reaction of CSI with 2-ethyl-3a,4,7,7a-tetrahydro-1H-isoindole-1,3(2H)-dione resulted in the formation of ylidenesulfamoyl chloride, whose exact configuration was determined by X-ray crystal analysis. We explain the mechanism of product formation supported by theoretical calculations.
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