نتایج جستجو برای: ortho acylation
تعداد نتایج: 9489 فیلتر نتایج به سال:
The 1 : 2 adduct of 1-bromo-ortho-carborane and pyridine has been identified as a significant intermediate in the deboronation of ortho-carborane to a nido-anion.
Highly efficient and regioselective acylation of pharmacologically interesting gastrodin with vinyl undecylenic acid has been firstly performed through an enzymatic approach. The highest catalytic activity and regioselectivity towards the acylation of 7'-hydroxyl of gastrodin was obtained with Pseudomonas cepacia lipase. In addition, it was observed the lipase displayed higher activity in the e...
The long-known, but previously unexplored 2,3-dihydroimidazo[1,2-a]pyridine (DHIP) has been shown to be a competent acyl transfer catalyst. Its chiral 2-phenyl derivatives obtainable in two steps from commercially available starting materials have proved to be effective acylation catalysts, giving high levels of enantioselectivity (s = 20-85) in kinetic resolution of secondary benzylic alcohols...
Orthokeratology practice in children in a university clinic in Hong Kong Clin Exp Optom, 2008. 91(5): p. 453-60. PURPOSES: The aim of this study was to analyse clinical data of children undergoing orthokeratology (ortho-k) and to investigate patients'/parents' perspective on ortho-k via telephone interviews. METHODS: Clinical records of children undergoing ortho-k from a university optometry cl...
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