Stereoselective formation of a P–P bond in the reaction of 2-alkoxy-2-thio-1,3,2-oxathiaphospholanes with O,O-dialkyl H-phosphonates and H-thiophosphonates
作者:Damian Błaziak、Piotr Guga、Agata Jagiełło、Dariusz Korczyński、Anna Maciaszek、Anna Nowicka、Aleksandra Pietkiewicz、Wojciech J. Stec
DOI:10.1039/c0ob00104j
日期:——
A new method for the formation of organohypophosphates containing a P–P bond under mild conditions, based on the DBU-assisted reaction of 2-alkoxy-2-thio-1,3,2-oxathiaphospholanes with O,O-dialkyl H-phosphonates or H-thiophosphonates, has been elaborated. The resulting triesters of P1-thio- and P1,P2-dithiohypophosphoric acids, respectively, having O-methyl or O-ethyl groups, can be selectively dealkylated
一种基于温和条件下形成具有P–P键的有机次磷酸酯的新方法。 DBU已经阐述了2-烷氧基-2-硫代1,3,2-氧杂磷烷基膦与O,O-二烷基H-膦酸酯或H-硫代膦酸酯的辅助反应。所得的分别为P 1-硫代-和P 1,P 2-二硫代次磷酸的三酯具有邻甲基 或者 邻乙基基团可以被选择性地脱烷基以形成相应的二或单酯。适当保护2'-脱氧鸟苷-3'- O-(2-硫代-1,3,2-氧代磷杂环戊烷)将其以高度立体选择性的方式(分别为98%+和90%+)转化为相应的P 1-硫代-和P 1,P 2-二硫代次磷酸酯。