نتایج جستجو برای: regio and chemoselective
تعداد نتایج: 16827812 فیلتر نتایج به سال:
Fine-tuned catalytic processes facilitating regio- and stereoselective conversions for the large-scale synthesis of a pentasaccharide its oligomerization into ready-for-conjugation haptens.
A regio- and stereoselective intramolecular direct aldol reaction of 2,7-diketones derived from carbohydrates has been developed to construct cycloalkanones , which were dehydrated to obtain heavily oxygenated cycloalkenones .
In the presence of substoichiometric Pd(OAc)(2), carboxylic acids undergo highly regio- and stereoselective additions to ynamides to provide α-acyloxyenamides.
Conjugated dienes were produced with complete regio- and stereoselectivity by the titanocene(ii)-promoted alkylation of propargyl carbonates via the formation of 2,3,4-trisubstituted titanacyclobutenes.
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