Cycloaddition of Bun3P·CS2: Direct one-pot conversion of strained double bonds to 2-alkylidene-1,3-dithiolanes
作者:R. Alan Aitken、Katriona Carcas、Lawrence Hill、Tracy Massil、Swati V. Raut
DOI:10.1016/s0040-4020(96)01128-3
日期:1997.2
adduct between tri-n-butylphosphine and carbon disulfide 1 with norbornene gives the novel zwitterionic structure 9. In solution this dissociates to the ylide 8 which undergoes Wittig reaction with aldehydes. Using the same method, the overall conversion of the strained double bond in a variety of bicyclo[2.2.1]alkenes into 2-benzylidene-1,3-dithioles 15–24 has been achieved and the reaction is also applicable
Cycloaddition of Bu<sup>n</sup><sub>3</sub>P·CS<sub>2</sub>: direct one-pot conversion of strained double bonds to 2-alkylidene-1,3-dithiolanes
作者:R. Alan Aitken、Tracy Massil、Swati V. Raut
DOI:10.1039/c39940002603
日期:——
Reaction of the strained doublebond in bicyclo[2.2.1]heptene systems with Bun3P·CS2 and an aldehyde provides convenient access to the corresponding 2-alkylidene-1,3-dithiolanes.
双环[2.2.1]庚烯体系中的应变双键与Bu n 3 P·CS 2和醛的反应可方便地获得相应的2-亚烷基-1,3-二硫杂环戊烷。
Solvent, salt and high pressure effects on the rate and equilibrium constants for the formation of tri-<i>n</i>
-butylphosphoniumdithiocarboxylate
作者:Gulnara G. Iskhakova、Vladimir D. Kiselev、Rudi van Eldik、Achim Zahl、Mehdi S. Shihab、Alexander I. Konovalov
DOI:10.1002/poc.1765
日期:2011.5
Solvent, salt and high pressure effects on the rate and equilibrium constants for the formation of tri‐n‐butylphosphoniumdithiocarboxylate at 298.2 K are reported. This equilibrium is shifted to the phosphobetaine in polar solvents, salt solutions and under high external pressure. The reaction volume changes dramatically on going from less polar diethyl ether (−69 cm3 mol−1) and tetrahydrofurane (THF)
Formation of novel 1 : 2 adducts between Bu<sup>n</sup><sub>3</sub>P·CS<sub>2</sub>and electron-deficient alkynes
作者:R. Alan Aitken、George Ferguson、Swati V. Raut
DOI:10.1039/c39910000812
日期:——
The zwitterionic adduct between tri-n-butylphosphine and carbon disulphide reacts under neutral conditions with two equivalents of dimethyl and diethyl acetylenedicarboxylate, dibenzoylacetylene and methyl benzoylpropiolate to give novel crystalline dithiole-containing ylides whose structure is established by X-ray crystallography.
三正丁基膦和二硫化碳之间的齐聚物在中性条件下与两个当量的乙炔二甲酸二甲酯和二乙酯、二苯甲酰基乙炔和苯甲酰丙炔酸甲酯发生反应,生成新型结晶的含二硫醚的酰化物,并通过 X 射线晶体学确定了其结构。