(2R,3S,5R)-[3-hydroxy-5-(5-methyl-2,4-dioxo-3,4-dihydro-2H-pyrimidin-1-yl)-tetrahydro-furan-2-yloxymethyl]-phosphonic acid diethyl ester 在
二乙胺基三氟化硫 作用下,
以
二氯甲烷 为溶剂,
反应 1.0h,
以75%的产率得到(4-methyl-5-oxo-8,11-dioxa-2,6-diaza-tricyclo[7.2.1.0
2,7]dodeca-3,6-dien-10-yloxymethyl)-phosphonic acid diethyl ester