No abstract

No abstract

reactions of organo-metal compounds reactions of organo-metal compounds O 0350 -077Preparation and Reactions of New Zincated Nitrogen-Containing Heterocycles.-In context with the development of general synthetic methods for the introduction of heterocyclic moieties into organic molecules, iodinated or brominated nitrogen-containing heterocycles are found to insert Zn dust under mild conditions. The intermediate zinc reagents react with various electrophiles under transition-metal catalysis.-(PRASAD, A. S. B.; STEVENSON, T. M.; CITINENI, J. R.; NYZAM, V.; KNOCHEL, P.; Tetrahedron 53 (1997) 21, 7237-7254;

reactions of organo-metal compounds reactions of organo-metal compounds O 0350 -063Preparation of Zinc Organometallics Derived from Nucleosides and Nucleic Acid Bases and Pd(0)-Catalyzed Coupling with Aryl Iodides.-Iodinated nucleic bases such as (I) readily insert zinc to give an organozinc halide which undergoes a Pd(0) catalyzed cross-coupling reaction with aryl iodides. This efficient reaction can also be applied to nucleosides. -(STEVENSON, T. M.; PRASAD, A. S. B.; CITINENI, J. R.; KNOCHEL, P.; Tetrahedron Lett. 37 (1996) 46, 8375-8378;