Synthesis 2013; 45(13): 1785-1790
DOI: 10.1055/s-0033-1338444
paper
© Georg Thieme Verlag Stuttgart · New York

Further Studies of Benzothiazine Metalation

Nathan L. Calkins
,
Michael Harmata*
Further Information

Publication History

Received: 22 March 2013

Accepted: 02 April 2013

Publication Date:
08 May 2013 (online)


Dedicated to Professor Scott E. Denmark on the occasion of his 60th birthday

Abstract

Treatment of benzothiazines 3 and 8 with butyllithium resulted in deprotonation at C3 to afford the corresponding organolithium species. These compounds could be trapped with a variety of electrophiles to give products in high yield. Some limitations to the processes chiefly based on steric effects were uncovered. Interesting and potentially useful side reactions were also established.

Supporting Information

 
  • References

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