Intramolecular rhodium carbenoid insertions into aromatic CH bonds. Preparation of 1-carboalkoxy-1,3-dihydrobenzo[C]thiophene 2,2-dioxides

✍ Scribed by Michael Hrytsak; Nola Etkin; Tony Durst

• Publisher: Elsevier Science
• Year: 1986
• Tongue: French
• Weight: 191 KB
• Volume: 27
• Category: Article
• ISSN: 0040-4039
• DOI: 10.1016/s0040-4039(00)85299-5

✦ Synopsis

Rhodium acetate catalyzed decompostion of various a-diazo-B-phenylmethane sulfonyl esters resulted in the formation of the title compounds in 40-50% yields. 1,3-Dihydrobenzo[c]thiophene 2,2-dioxidesJare valuable precursors to o-quinodimethanes 2_.

The synthetic utility of these sulfones is well documented.'