By Alan R. Katritzky
Meant for natural chemists, this quantity follows the layout of past volumes and offers up to date details on chosen parts of heterocyclic chemistry.
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Additional resources for Advances in Heterocyclic Chemistry, Vol. 39
A. Sviridova, N. Y. Lebedenko, and A. N. Kost, Khim. Geterotsikl. Soedin. 4, 541 (1973). E. F. Godefroi, J. Org. Chem. 33, 860 (1968). REDUCTION OF NITROGEN HETEROCYCLES Sec. @ (26’) Treatment of the long-chain imidazolium salts 263 with potassium, sodium, and tetra-n-butylammonium borohydrides affords the acyclic diamines 264 and 265. 136Sodium cyanoborohydride failed to reduce the same salt under a variety of conditions. 136Sodium borohydride is a less effective reducing agent in this reaction, achieving the same conversion over a longer period of time.
Sykes, J. C. Chem. , 370 (1965). G . M. Clarke and P. Sykes, J. C. 141 1 (1967). Sec. 124 \s’ c, H*O S ‘’ RWC 0 $a, b i N. D. Bachi, J. C. S. Perkin I , 310 (1972). 126 12’ D. S u c k J. Prakt. Chem. 314,961 (1972). -L. -C. Roze, and G . Duguay, J. Chem. , 72 (1982). KEAY [Sec. A in such systems. Iz7This the imine bond in 2-phenyl-6H-l,3-thiazines results partially from the bond polarization effects of the phenyl group and partially from protonation. More powerful reducing agents affordring cleavage.
Perkin I, 1622 (1981). 14* J. A. Marshall and W. S. Johnson, J. Org. Chem. 28,421 (1963). 149 C. Kashima, A. Katoh, N. Yoshiwara, and Y. Omote,J. Chem. 18,1595 (198 1). 145 Sec. F] 49 REDUCTION OF NITROGEN HETEROCYCLES tXX R I LiAlH, TH F b R H M e NHR' R' (24 (288) X = O , S ; R'=Me,Aryl; RZ= H , M e , Pr,Ph; R3=H,Me,Ph recovered. Earlier, it had been found that ethyl 4-hydroxyiminomethyl-2methylthiopyrimidine-5-carboxylate(290a), and subsequently other pyrimidines, underwent preferential ring reduction.
Advances in Heterocyclic Chemistry, Vol. 39 by Alan R. Katritzky