The palladium-catalyzed coupling-cyclization of monoesters of 1,2-allenyl phosphonic acids with allylic halides was studied. 4-Allyl-2,5-dihydro[1,2]oxaphosphole 2-oxides were smoothly afforded. Multi substituted 1-ethoxy-1,3-dihydro[2,1]benzoxaphosphole 1-oxides were prepared from 3,4-diallyl-2,5-dihydro[1,2]oxaphosphole 2-oxides by a one-pot tandem reaction.

中文翻译：

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Pd(II)-催化偶联-环化 1,2-烯丙基膦酸单酯与烯丙基卤化物及其在合成 1,3-二氢[2,1]苯并氧杂磷 1-氧化物中的应用

研究了钯催化的 1,2-烯丙基膦酸单酯与烯丙基卤化物的偶联-环化反应。4-Allyl-2,5-dihydro[1,2]oxaphosphole 2-oxides 顺利得到。多取代的 1-ethoxy-1,3-dihydro[2,1]benzoxaphosphole 1-oxides 由 3,4-diallyl-2,5-dihydro[1,2]oxaphosphole 2-oxides 通过一锅串联反应制备.