简介：3,5,6,8-Tetrahydro-4H-thiopyrano[4′,3′:4,5]thieno[2,3-d]pyrimidin-4-ones(7)weresynthesizedviathebasecatalyticreactionsofaminesorphenolswithcarbodiimides(5),whichwereobtainedfromtheaza-Wittigreactionsofiminophosphoranes(4)witharomaticisocyanates.
Efficient Synthesis of 3,5,6,8-Tetrahydro-4H-thiopyrano[4＇,3＇：4,5]. thieno｜2,3-d]pyrimidin-4-ones via an Iminophosphorane
![Efficient Synthesis of 3,5,6,8-Tetrahydro-<b style='color:red'>4</b>H-thiopyrano[<b style='color:red'>4</b>＇,3＇：<b style='color:red'>4</b>,5]. thieno｜2,3-d]pyrimidin-<b style='color:red'>4</b>-ones via an Iminophosphorane](/image/thesis0 "Efficient Synthesis of 3,5,6,8-Tetrahydro-<b style='color:red'>4</b>H-thiopyrano[<b style='color:red'>4</b>＇,3＇：<b style='color:red'>4</b>,5]. thieno｜2,3-d]pyrimidin-<b style='color:red'>4</b>-ones via an Iminophosphorane")