نتایج جستجو برای: preparation of esters
تعداد نتایج: 21171500 فیلتر نتایج به سال:
As an extension of previous investigations (1, 2) concerning the specificity of cholinesterase, the present study deals with the effect upon enzymatic hydrolysis of variations in the chain length of the acid component of choline esters. It is known from earlier work (3, 1) that increasing the normal chain length from 2 to 4 carbon atoms results in increased cnzymatic and decreased alkaline spli...
Bacteria and actinomycetes were screened for esterase enzymes capable of removing the para-nitrobenzyl ester from cephalosporins. An esterase preparation from Bacillus subtilis was used to prepare cephalexin and 7-ADCA from the corresponding para-nitrobenzyl esters.
Facile and versatile procedures have been explored for the synthesis of tetrahydropyridines and 2,3-dihydroquinazolin-4(1H)-ones. These protocols employ the one-pot multi-component condensation of arylaldehydes and aromatic amines with β-keto esters and isatoic anhydride in chloroacetic acid, respectively. The reactions proceeded smoothly to generate the corresponding products in high yield. We...
Facile and versatile procedures have been explored for the synthesis of tetrahydropyridines and 2,3-dihydroquinazolin-4(1H)-ones. These protocols employ the one-pot multi-component condensation of arylaldehydes and aromatic amines with β-keto esters and isatoic anhydride in chloroacetic acid, respectively. The reactions proceeded smoothly to generate the corresponding products in high yield. We...
facile and versatile procedures have been explored for the synthesis of tetrahydropyridines and 2,3-dihydroquinazolin-4(1h)-ones. these protocols employ the one-pot multi-component condensation of arylaldehydes and aromatic amines with β-keto esters and isatoic anhydride in chloroacetic acid, respectively. the reactions proceeded smoothly to generate the corresponding products in high yield. we...
نمودار تعداد نتایج جستجو در هر سال
با کلیک روی نمودار نتایج را به سال انتشار فیلتر کنید