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You are using Science Of Synthesis as a Guest. Please login or sign up for a free trial to access the full content. Method 2: Reactions Involving Decarboxylation at an Annulated Ring Carbon

DOI: 10.1055/sos-SD-017-00003

Yamazaki, S.; Yamamoto, K.Science of Synthesis, (20041746.

The decarboxylation of phenoxathiin-3-carboxylic acid (136) with calcium oxide to phen­oxathiin (4) is reported (Scheme 44).[‌112‌]

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