Efficient Synthesis of 3,5,6,8-Tetrahydro-4H-thiopyrano[4',3':4,5]thieno[2,3-d]pyrimidin-4-ones via an Iminophosphorane

LI Wen-jing, LIU Min, FENG Ling-ling* and DING Ming-wu*

Chemical Research in Chinese Universities . 2010, (1): 60 -65 .