Highly stereoselective synthesis of di- and trisubstituted homoallylic alcohols via palladium(O)-catalyzed nucleophilic opening of vinylic oxetanes
作者:Richard C. Larock、Sandra K. Stolz-Dunn
DOI:10.1016/s0040-4039(00)99420-6
日期:1989.1
Vinylic oxetanes react in an SN2′ manner with a variety of potential nucleophiles in the presence of catalytic amounts of Pd(PPh3)4 to afford the corresponding highly functionalized, di- and trisubstituted homoallylic alcohols with high stereoselectivity.
在催化量的Pd(PPh 3)4存在下,乙烯基氧杂环丁烷以S N 2'的方式与多种潜在的亲核试剂反应,从而提供具有高立体选择性的相应的高度官能化的二取代和三取代的均烯丙基醇。
作者:Zhi-Xin Chang、Fei-Yuan Gong、Xiaodan Wang、Tongbo Zhang、Junfen Han、Hong-Shuang Li
DOI:10.1021/acs.orglett.1c02153
日期:2021.8.6
Portnyagin,Yu.M.; Pak,N.E., Journal of Organic Chemistry USSR (English Translation), 1971, vol. 7, p. 1691 - 1694
作者:Portnyagin,Yu.M.、Pak,N.E.
DOI:——
日期:——
Synthesis of 1,3-Oxazine Derivatives by Palladium-Catalyzed Cycloaddition of Vinyloxetanes with Heterocumulenes. Completely Stereoselective Synthesis of Bicyclic 1,3-Oxazines
作者:Chitchamai Larksarp、Howard Alper
DOI:10.1021/jo990430b
日期:1999.5.1
1,3-Oxazines were prepared by palladium-phosphine-catalyzed cycloaddition reactions of vinyloxetanes with heterocumulenes. 4-Vinyl-1,3-oxazin-2-imines were obtained in fine yields by the reaction of 2-vinyloxetanes with carbodiimides in THF at rt for 12 h using 1.5 mol % Pd-2(dba)(3). CHCl3 and 3 mol % bidentate phosphine ligands (dppe or dppp). When isocyanates were utilized in the reaction, moderate to good yields of 4-vinyl-1,3-oxazin-2-ones were achieved within 1-2 h at rt. Palladium-catalyzed cycloaddition of fused-bicyclic vinyloxetanes with heterocumulenes proceeds in a highly stereoselective fashion affording only the cis-3-aza-1-oxo-9-vinyl[4.4.0]decane derivatives in 43-98% yield.
Synthesis of homoallylic alcohols via palladium-catalyzed coupling of organomercurials and vinylic oxetanes