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Efficient synthesis of 1,3-benzodioxin-4-one and benzoxazine-2,4-diones
Journal article   Open access  Peer reviewed

Efficient synthesis of 1,3-benzodioxin-4-one and benzoxazine-2,4-diones

Alan R. Katritzky, Sanjay K. Singh, Rena Akhmedova, Chunming Cai and Sergey Bobrov
ARKIVOC free online journal of organic chemistry, Vol.2007(6), pp.6-13
01/01/2007
DOI: https://doi.org/10.3998/ark.5550190.0008.602

Abstract

Chemistry Chemistry, Organic Physical Sciences Science & Technology
Reactions of stable N-(o-hydroxyarylacyl) benzotriazoles 4a-c / 6a-c with various aldehydes in the presence of base afforded 1,3-benzodioxin-4-ones 1a-d and naphtho-1,3-dioxinones 7a-c. Reaction with isocyanates under similar conditions afforded high yields of benzoxazine-2,4-diones 2a-c and naphthoxazine-1,3-diones 9a-b.
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https://doi.org/10.3998/ark.5550190.0008.602View
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