Thietane, tetrahydrothiophene and tetrahydrothiopyran formation in reaction of methylene-interrupted dienoates with dimethyl disulfide
作者:Néstor M. Carballeira、Fathi Shalabi、Clarisa Cruz
DOI:10.1016/s0040-4039(00)77250-9
日期:1994.8
The reaction of dimethyl disulfide in I2 with a series of methylene-interrupted methyl dienoates was examined. In all cases ring-closure occurs and thietane formation competes favorably with tetrahydrothiophene formation. When the I2 concentration was increased, tetrahydrothiopyran formation was observed. These results are explained in terms of two distinct reaction pathways.
Boland, Wilhelm; Jaenicke, Lothar, Liebigs Annalen der Chemie, 1981, # 1, p. 92 - 98
作者:Boland, Wilhelm、Jaenicke, Lothar
DOI:——
日期:——
LIPID BIOMARKERS FOR THE DIAGNOSIS OF CANCER
申请人:Agency for Science, Technology and Research
公开号:EP3427066A1
公开(公告)日:2019-01-16
COPPER AND ZINC ELUTION PREVENTING METHOD OF COPPER-ALLOY-MADE PLUMBING INSTRUMENT INCLUDING VALVE AND PIPE JOINT, COPPER-ALLOY-MADE PLUMBING INSTRUMENT USING THE METHOD, AND FILM-FORMING AGENT
申请人:SUGAYA Norikazu
公开号:US20120125458A1
公开(公告)日:2012-05-24
A method is provided for preventing copper and zinc from being eluted from a copper-alloy-made plumbing instrument that includes valves and pipe joints and suppresses copper and zinc from being eluted from the copper-alloy-made plumbing instrument while using for the plumbing instrument copper alloy as-is that includes bronze and brass, to provide a copper-alloy-made plumbing instrument using the method and to provide a film-forming agent. The method forms on at least a liquid-contact portion of the copper-alloy-made plumbing instrument a film of an organic substance comprising unsaturated fatty acid and coating with the film both copper and zinc in the surface layer of the liquid-contact portion of the plumbing instrument, thereby suppressing the elution of copper and zinc.
Compositions Comprising A Near Terminal-Branched Compound And Methods Of Making The Same
申请人:Scheibel Jeffrey John
公开号:US20130053300A1
公开(公告)日:2013-02-28
Disclosed herein are novel mixtures of near terminal-branched compounds and derivatives thereof. Further disclosed are methods of making these mixtures, and uses of these mixtures in cleaning compositions (e.g., dishcare, laundry, hard surface cleaners,) and/or personal care compositions (e.g., skin cleansers, shampoo, hair conditioners).