B,N,S-Heterocyclics

B,N,S-Heterocyclics. 5-Amino-a,a,a-trifluorotoluene-2,4-disulfonamide and 2-phen-ylethaneboronic acid added at 80° to a mixture of dry xylene and diglyme, then refluxed 3 hrs. under a Dean-Stark trap to remove the resulting water 3,4-dihydro -3- phenethyl -6-(trifluoromethyl)-2H-l, 2,4,3- benzothiadiazaborine-7- sulfonamide 1,1-dioxide. Y 92%. F. e. s. H. L. Yale, J. Heterocyclic Chem. 8, 205, 193... 

Molecular structures of B,S- and B,N,O-heterocycles 90MI4. Oxazaborolidine or cyclic diamidoborane in asymmetric synthesis 90YGK980. 

Stephan I, B Tshisuaka, S Fetzer, F Lingens (1996) Quinaldine 4-oxidase from Arthrobacter sp. Ru61a, a versatile procaryotic molybdenum-containing hydroxylase active towards N-containing heterocyclic compounds and aromatic aldehydes. Eur J Biochem 236 155-162. 

Dr. S. T. Reid has contributed the first of two sections on photochemistry of heterocycles, the present one dealing with that of /V-heterocycles. This updates part of his own earlier review The Photochemistry of Heterocycles published in 1970 in Volume 11. A further contribution, which will extend the updating to O- and 5-heterocycles, should be published shortly. Dr. A. B. Hornfeldt s review, entitled Selenophenes, also deals with a subject that was previously reviewed in Volume 12 of this series by N. N. Magdesieva. 

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