An Efficient One-pot Two-component Protocol for Regio- and Chemoselective Synthesis of 5-Aryloyl-1,3,7,9-tetraalkyl-2,8-dithioxo-2,3,8,9-tetrahydro-1H-pyrano[2,3-d:6,5-d′]dipyrimidine-4,6(5H,7H)-diones
作者:Mehdi Rimaz、Hossein Rabiei、Behzad Khalili、Rolf H. Prager
DOI:10.1071/ch13438
日期:——
Novel symmetric fused pyrano[2,3-d]pyrimidine derivatives were synthesized in 75–92 % yield by a one-pot two-component reaction of arylglyoxals and 1,3-dialkyl-2-thiobarbituric acids in ethanol at room temperature. This is the first protocol to be reported for the synthesis of 5-aryloyl-1,3,7,9-tetraalkyl-2,8-dithioxo-2,3,8,9-tetrahydro-1H-pyrano[2,3-d:6,5-d′]dipyrimidine-4,6(5H,7H)-diones and the
在室温下,通过乙醇中的芳基乙二醛和1,3-二烷基-2-硫代巴比妥酸的一锅两组分反应,可以合成新的对称稠合的吡喃并[2,3- d ]嘧啶衍生物,产率为75-92%。这是第一个关于合成5-芳基-1,3,7,9-四烷基-2,8-二硫代-2,3,8,9-四氢-1 H-吡喃[2,3]的协议。 - d:6,5- d' ] dipyrimidine -4,6(5 ħ,7 ħ) -二酮,并且本协议的显著特点是简单,高收率,简单的分离方法,和高化学选择性。