The Pt-catalyzed hydrosilylation of equilibrating allylic azides is reported. The reaction provides only one out of four possible hydrosilylation products in good yields and with very high chemoselectivity (alk-1-ene vs. alk-2-ene), regioselectivity (linear vs. branched), and excellent functional group tolerance.
The direct stereoselective conversion of various alcohols and hexopyranoses into the corresponding alkyl azides and glycosyl azides, respectively, is efficiently accomplished by using bis(p-nitrophenyl) phosphorazidate and DBU.
An Improved Procedure for the Conversion of Alkenes and Glycals to 1,2-Diazides Using Mn(OAc)<sub>3</sub>·2H<sub>2</sub>O in Acetonitrile Containing Trifluoroacetic Acid
作者:Barry B. Snider*、Hong Lin
DOI:10.1080/00397919808007024
日期:1998.5
Abstract Alkenes and Glycals react with Mn(OAc3)·2H2O and NaN3 in 9:1 acetonitrile-trifluoroacetic acid to give 1,2-diazides in >80% yield. Allylic azides are formed by slow addition of NaN3 to a mixture of alkene, Mn(OAc)3·2H2O and Cu(OAc)2.
The patent discloses novel quinoline derivatives of formula (I), (Formula should be inserted here) and process for preparing the same. The compounds of formula (I) can be further used for the synthesis of Inhibitors like Kinase Tyrosine Inhibitors.