330 research outputs found
Deoxygenative Insertion of Carbonyl Carbon into a C(sp3)βH Bond: Synthesis of Indolines and Indoles
A simple deoxygenation reagent prepared in situ from commercially available Mo(CO)6 and ortho-quinone has been developed for the synthesis of indoline and indole derivatives. The Mo/quinone complex efficiently deoxygenates carbonyl compounds bearing a neighboring dialkylamino group and effects intramolecular cyclizations with the insertion of a deoxygenated carbonyl carbon into a C(sp3)βH bond, in which a carbonyl group acts as a carbene equivalent. The reaction also proceeds with a catalytic amount of Mo/quinone in the presence of disilane as an oxygen atom acceptor
Protein engineering of Candida rugosa lipase
Lipases (EC 3.1.1.3) catalyze the hydrolysis of emulsified long-chain triacylglycerol at the lipidβwater interface. Candida rugosa lipase (CRL) is one of important industrial enzymes that are widely used in biotechnological applications such as the production of fatty acids and the synthesis of various esters. The catalytic efficiency and substrate specificity are seemed to be the key factors for industrial applications. Several approaches have been used to increase the stability of different lipases. For example, the immobilized CRL on carriers led to significant improvement in the catalystβs activity and stability (Ref 1). In this study, we have focused on protein engineering to improve the properties of CRL.
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