Highly Practical Synthesis of Nitriles and Heterocycles from Alcohols under Mild Conditions by Aerobic Double Dehydrogenative Catalysis
摘要:
A mild, aerobic, catalytic process for obtaining nitriles directly from alcohols and aqueous ammonia is described. The reaction proceeds via a dehydrogenation cascade mediated by catalytic CuI, bpy, and TEMPO in the presence of O-2. The substrate scope is broad including various functionalized aromatic and aliphatic alcohols. This protocol enabled the one-pot synthesis of various biaryl heterocycles directly from commercially available alcohols.
A Facile Synthesis of 3-Substituted Glutaraldehyde Monoacetals from Nitriles
作者:Giorgio Chelucci
DOI:10.1055/s-1991-26497
日期:——
3-Substituted glutaraldehyde monoacetals 7 have been prepared in 48-58% overall yield, consecutively by the alkylation of nitriles, first with 2-bromo-1,1-diethoxyethane (2) and then with 2-iodomethyl-1,3-dioxolane (4), followed by removal of the cyano group and selective hydrolysis of the diethyl acetal function.
The preparation of highly branched ketones and alcohols
作者:W. A. Mosher、P. W. Berger、A. P. Foldi、J. E. Gardner、T. J. Kelly、C. Nebel
DOI:10.1039/j39690000121
日期:——
A procedure is described for the preparation of highlybranchedketones and alcohols with the general formulae R2R3R4C·CHR5·CO·R1 and R2R3R4C·CHR5·CR6(OH)R1. The multi-step route involves classical synthetic methods which give good yields. R may be varied and can be either alkyl or aryl.
描述了制备通式为R 2 R 3 R 4 C·CHR 5 ·CO·R 1和R 2 R 3 R 4 C·CHR 5 ·CR 6(OH)R的高度支化的酮和醇的方法1。多步路线涉及经典的合成方法,可提供良好的收率。R可以变化并且可以是烷基或芳基。