86853-20-5Relevant academic research and scientific papers
An oxorhenium complex bearing a chiral cyclohexane-1-olato-2-thiolato ligand: Synthesis, stereochemistry, and theoretical study of parity violation vibrational frequency shifts
Saleh, Nidal,Bast, Radovan,Vanthuyne, Nicolas,Roussel, Christian,Saue, Trond,Darquié, Beno?t,Crassous, Jeanne
, p. 147 - 156 (2018/01/17)
In our effort towards measuring the parity violation energy difference between two enantiomers, a simple chiral oxorhenium complex 5 bearing enantiopure 2-mercaptocyclohexan-1-ol has been prepared as a potential candidate species. Vibrational circular dichroism revealed a chiral environment surrounding the rhenium atom, even though the rhenium is not a stereogenic center itself, and enabled to assign the (1S,2S)-(?) and (1R,2R)-(+) absolute configuration for 5. For both compound 5 and complex 4, previously studied by us and bearing a propane-2-olato-3-thiolato ligand, relativistic calculations predict parity violating vibrational frequency differences of a few hundreds of millihertz, above the expected sensitivity attainable by a molecular beam Ramsey interferometer that we are constructing.
A new stable modified borohydride reagent. Efficient reduction of different functional groups with sulfurated barium borohydride [Ba(BH2S3)2] in dry THF
Firouzabadi, Habib,Ghadami, Mahboobeh
, p. 83 - 98 (2007/10/03)
Barium and strontium sulfurated borohydrides, Ba(BH2S3)2,Sr(BH2S3) 2 the two newly introduced modified borohydride agents, are prepared from NaBH2S3 by metathesis reaction with BaCl2 and SrCl2 in good yields. Ba(BH2S3)2 is more stable and more reactive than Sr(BH2S3)2. The reducing ability of Ba(BH2S3)2 for the reduction of aldehydes, ketones, α,β-unsaturated carbonyl compounds, azides, nitro compounds, and cleavage of epoxides in dry THF is described.
Highly efficient, regio- and stereoselective ring opening of epoxides and thiiranes with Ce(OTf)4
Iranpoor,Shekarriz,Shiriny
, p. 347 - 366 (2007/10/03)
Ceric triflate, Ce(OTf)4 is used as an efficient catalyst for ring opening of epoxides in the presence of alcohols, water, and acetic acid. The reactions proceed with high regio and stereoselectivity and in excellent yields. The reaction of R(+) styrene oxide with methanol occurs with excellent optical purity. Ring opening of thiiranes in alcohols, water and acetic acid followed by dimerisation to the corresponding disulfides occur efficiently in the presence of this reagent. A mild method for the preparation of dithianes from thiiranes and Ce(OTf)4 is also described.
