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Intramolecular Oxa-Mannich Reaction of 1,3-Dihydro-2-benzofuran-1-ol for Efficient Synthesis of 1-Aminophthalan Derivatives

김성곤|Heebum Kim
대한화학회|2022.02|대한화학회지 (Journal of the Korean Chemical Society)|제66권 제1호|pp. 9-14

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참고문헌

키워드

13-DihydroisobenzofuranPhthalanp-ToluenesulfonylamineMannich reaction
주제분류화학

초록

An efficient method for the synthesis of 1-aminophthalans has been developed. The intramolecular oxa-Mannich reaction of 1,3-dihydro-2-benzofuran-1-ols with p-toluenesulfonylamine in the presence of Cs2CO3 as a base, without using any catalyst, provided the desired 1-aminophthalans in moderate to good yields.

Abstract

An efficient method for the synthesis of 1-aminophthalans has been developed. The intramolecular oxa-Mannich reaction of 1,3-dihydro-2-benzofuran-1-ols with p-toluenesulfonylamine in the presence of Cs2CO3 as a base, without using any catalyst, provided the desired 1-aminophthalans in moderate to good yields.

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