Rh/DuanPhos-Catalyzed Asymmetric Hydrogenation of β-Acetylamino Vinylsulfides: An Approach to Chiral β-Acetylamino Sulfides
摘要:
Rh/DuanPhos-catalyzed asymmetric hydrogenation of challenging beta-acetylamino vinylsulfides has been developed; affording chiral beta-acetylamino, sulfides with high yield's and excellent ee's (up to, 99% ee). This novel methodology provides an efficient and' concise, synthetic route, to chiral beta-acetylamino sulfides. The potential utility of this protocol in the synthesis of Apremilast has also been disclosed.
N-Aminosulfenyl carbamate compounds, compositions and use
申请人:Union Carbide Corporation
公开号:US04315928A1
公开(公告)日:1982-02-16
A novel class of N-aminosulfenyl carbamate compositions have outstanding insecticidal and miticidal properties coupled with very low toxicity to mammals and important economic crops.
Mass spectral characteristics of the sulfur-containing ketoxime carbamates thiofanox and metabolites
作者:H. G. Corkins、J. J. Mannion、L. Storace
DOI:10.1002/oms.1210150406
日期:1980.4
AbstractDeuterium labeling and high resolution mass spectroscopy have been used to determine the modes of electron impact fragmentation of 3,3‐dimethyl‐1‐methylthio‐2‐butanone O‐[(methylamino)carbonyl]oxime, thiofanox and its metabolites, the sulfoxide and sulfone. The mass spectra of the corresponding oximes were also examined. The carbamates fragmented chiefly by two competing pathways—the loss of CH3NCO or the sulfur‐containing moiety. The favored process was dependent on the oxidation state at sulfur. Several unusual rearrangements were noted.