Palladium‐Acid Co‐Catalyzed Cleavage of Alkynoates to Construct Dibenzo[c,h]xanthene Derivatives,Advanced Synthesis & Catalysis

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Palladium‐Acid Co‐Catalyzed Cleavage of Alkynoates to Construct Dibenzo[c,h]xanthene Derivatives
Advanced Synthesis & Catalysis ( IF 4.4 ) Pub Date : 2018-09-04 , DOI: 10.1002/adsc.201800770
Bo-Cheng Tang ₁ , Miao Wang ₁ , Jin-Tian Ma ₁ , Zi-Xuan Wang ₁ , Yan-Dong Wu ₁ , An-Xin Wu _{1,

2}

Affiliation

A novel palladium‐acid co‐catalyzed C(sp)−C(sp²) cleavage of alkynoates for the construction of dibenzo[c,h]xanthene derivatives is reported. A catalytic amount of triflic acid (TfOH) afforded an efficient transformation into the final product. Furthermore, a reduction process of alkynoates was observed during the formation of dibenzo[c,h]xanthene, preliminary mechanistic studies indicated that the protonation of the new‐formed methyl group in dibenzo[c,h]xanthene mainly came from water.

中文翻译：

钯酸共催化裂解炔烃以构建二苯并[c，h]]吨衍生物

报道了一种新颖的钯酸共催化炔烃的C（sp）-C（sp ²）裂解，用于构建二苯并[c，h]氧杂蒽衍生物。催化量的三氟甲磺酸（TfOH）有效转化为最终产物。此外，在二苯并[c，h] x吨的形成过程中观察到了炔酸的还原过程，初步的机理研究表明，二苯并[c，h] x吨的新形成的甲基质子化主要来自水。

更新日期：2018-09-04

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