Laboratory derivation of such a substance--dimethyl-tert-butylsilyl--is described and the structure of the chemical is diagrammed. The ethers of this substance are stable in water or alcohol bases under normal conditions and are also stable to hydrogenolysis and mild chemical r...
Benzyl protection and deprotection are the processes by which a benzyl protecting group is added to and removed from an alcohol in synthetic reactions.,百灵威
Alcohols are recovered from aqueous acid solution by permeation of the alcohol through an organic-acid modified polymer membrane. An improved process for the manufacture of alcohols by acid absorption of olefins is also disclosed, the im... Cohen,Abraham,D David,... 被引量: 4发表: 1992年 Che...
Prevalence rates for alcohol use and risk/protection varied more widely based on ethnic group compared to gender. Black youth reported the fewest risk factors and lowest levels of alcohol use, white youth reported the most risk factors and highest levels of alcohol use, and Hispanic youth ...
The guiding cases also involve some high-profile cases concerning child abuse by a family member, the illegal sale of alcohol to minors, custody rights, and visitation rights for grandparents. Thursday was the first time that the SPC has published guiding cases that specially concern the protectio...
Benzhydryl protection of primary and secondary alcohols has been reported previously via reaction with metal alcoholates. Our aim was to find generally useful and very mild conditions for the alcoholic protection and deprotection of nucleosides with the diphenylmethyl group. This was accomplished for som...
In this Letter, a selective deprotection of the alcohol protecting 3,4-dimethoxybenzyl ( 3,4 DMB) group is described. The hypervalent iodine(III) reagent p... K Watanabe,T Katoh - 《Tetrahedron Letters》 被引量: 18发表: 2011年 An Efficient Method for the p-Methoxybenzylation of Hydroxy ...
Cognitions in relation to drinking alcohol on a single occasion were explored within the framework of Protection Motivation Theory (PMT). One hundred and twenty three students provided information about their current weekend drinking, beliefs about drinking, and intentions to drink at safer limits. ...
aFinally,the primary alcohol within diol 109 was selectively acylated with octanoyl chloride in the presence of TEA, followed by de-protection with TFA in CH2Cl2 to give laninamivir octanote (VIII) in 70% yield. 终于,伯醇在二醇109之内有选择性地是acylated与octanoyl氯化物在茶面前,跟随由de保护与...
Alcohol consumption and self-reported sunburn: a cross-sectional, population-based survey. J Am Acad Dermatol. 2006;55(4):584-589.PubMedGoogle ScholarCrossref 37. Brown TT, Quain RD, Troxel AB, Gelfand JM. The epidemiology of sunburn in the US population in 2003. J Am Acad Dermatol....