Visible-light-enabled spirocyclization of alkynes leading to 3-sulfonyl and 3-sulfenyl azaspiro[4,5]trienones,Green Chemistry

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Visible-light-enabled spirocyclization of alkynes leading to 3-sulfonyl and 3-sulfenyl azaspiro[4,5]trienones
Green Chemistry ( IF 9.3 ) Pub Date : 2017-10-24 00:00:00 , DOI: 10.1039/c7gc02330h
Wei Wei _{1,

2,

3,

4,

5} , Huanhuan Cui _{1,

2,

3,

4,

5} , Daoshan Yang _{1,

2,

3,

4,

5} , Huilan Yue _{6,

7,

8,

9,

10} , Chenglong He _{1,

2,

3,

4,

5} , Yulong Zhang _{1,

2,

3,

4,

5} , Hua Wang _{1,

2,

3,

4,

5}

Affiliation

A mild and convenient visible-light-induced method has been developed for the construction of 3-sulfonyl and 3-sulfenyl azaspiro[4,5]trienones through metal-free difunctionalization of alkynes with sulfinic acids or thiols at room temperature. The present protocol simply utilizes visible light as the safe and eco-friendly energy source, and inexpensive and non-toxic organic dyes (Eosin Y and Na₂-Eosin Y) as photocatalysts providing various sulfur-containing azaspiro[4,5]trienones in moderate to good yields.

中文翻译：

炔烃在可见光下的螺环化反应，产生3-磺酰基和3-亚磺酰基氮杂螺并[4,5]三烯酮

已经开发了一种温和且方便的可见光诱导方法，用于通过在室温下用亚磺酸或硫醇将炔烃进行无金属双官能化来构建3-磺酰基和3-亚磺酰基氮杂螺并[4,5]三烯酮。本协议仅利用可见光作为安全和环保的能源，而廉价且无毒的有机染料（曙红Y和Na _2-曙红Y）作为光催化剂，在其中提供各种含硫氮杂螺并[4,5]三烯酮。中等至良好的产量。

更新日期：2017-11-06

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