Barbier-type allylation of carbonyl compounds and imines with metallic cadmium
作者:Bir Sain、Dipak Prajapati、Jagir S Sandhu
DOI:10.1016/s0040-4039(00)61288-1
日期:1992.8
Cadmium mediated allylation of a variety of carbonylcompounds and imines in a Cd/Bu4NBr/THF system afforded excellent yields of the corresponding homoallylic alcohols and amines under very mild reaction conditions.
在Cd / Bu 4 NBr / THF系统中,镉介导的各种羰基化合物和亚胺的烯丙基化在非常温和的反应条件下提供了极佳的相应均烯丙基醇和胺收率。
Cadmium metal-mediated allylation of carbonyl compounds
作者:Shuki Araki、Hirokazu Ito、Yasuo Batsugan
DOI:10.1016/0022-328x(88)80263-8
日期:1988.6
Metallic cadmium prompted Barbier-type coupling of carbonylcompounds and allylic halides. The reaction was regio-selective homoallylic alcohols coupled at the γ-position of allylic halides, α,β-Unsaturated carbonylcompounds underwent only 1,2-addition.
Revisiting the Addition of in-situ Nucleophiles to Allenic Ketones: An Entry Towards Synthesis of Benzodioxins
作者:Sushree Ranjan Sahoo、Debayan Sarkar
DOI:10.1002/ejoc.202000076
日期:2020.3.22
A revisit towards regioselective addition of in situ generated negative nucleophiles to allenicketones in the presence of a base. A direct ring annulation towards the benzodioxin skeleton synthesis has been developed. In the process, the obtained E‐vinyl kenones were readily transformed into sulfones and 2,5‐disubstituted oxazole.
Synthesis of (4E)-7-methoxytetradec-4-enoic acid: a novel fatty acid from lyngbya majuscula
作者:Craig B. Fryhle、Paul G. Williard、Rybak Carol M.
DOI:10.1016/s0040-4039(00)74202-x
日期:1992.4
The synthesis of (4E)-7-methoxytetradec-4-enoic acid is described. This novel fatty acid is found in the blue-green algae . and is incorporated as the amide in several nitrogeneous metabolites, including the fish antifeedant compound malyngamide A.
Efficient Synthesis of γ-Lactones via Gold-Catalyzed Tandem Cycloisomerization/Oxidation
作者:Chao Shu、Meng-Qi Liu、Yu-Zhe Sun、Long-Wu Ye
DOI:10.1021/ol302323a
日期:2012.9.21
A novel Au-catalyzed tandem cycloisomerization/oxidation of homopropargyl alcohols was developed. Various γ-lactones can be accessed readily by utilizing this strategy. Notably, the mechanism of this reaction is distinctively different from the related Ru-catalyzed reactions where the ruthenium vinylidene intermediate was proposed.