Producción Científica Profesorado

Benzazole-N(SINGLE BOND)BH3 adducts. Reductive transposition of 2-benzimidazole, 2-benzothiazole, and 2-benzoxazole N(SINGLE BOND)BH3 adducts to 1,3,2-benzimidazaborole, 1,3,2-benzoxaborole, and 1,3,2-benzothiazaborole



Andrade López, Noemí

1996

Benzazole-N-BH3 adducts. Reductive transposition of 2-benzimidazole 2-benzothiazole and 2-benzoxazole N-BH3 adducts to 1,3,2-benzimidaza-boroles, 1,3,2-benzoxaborole and 1,3,2-benzothiazaborole. I.I. Padilla-Martínez, N. Andrade-López, M. Gama-Goicochea, E. Aguilar-Cruz, A. Cruz, R. Contreras, Heteroatom Chem, 7, 1996, 323-335. ISSN (on line) 1098-1071. DOI: 10.1002/(SICI)1098-1071(199610)7:5<323::AID-HC7>3.0.CO;2-C


Abstract


1,3,2-Benzimidazaborole, 1,3,2-benzoxaborole, and 1,3,2-benzothiazaborole were synthesized from the corresponding 2-benzazole N(SINGLE BOND)BH3 and 2-benzazole S(SINGLE BOND)BH3 adducts through a reductive transposition from the isolobal fragment X(SINGLE BOND)C(sp2) (DOUBLE BOND) N(sp2) (SINGLE BOND) B(sp3) (X (DOUBLE BOND) N, O, S) to the fragment X(SINGLE BOND)B(sp2) (DOUBLE BOND) N(sp2) (SINGLE BOND) C(sp3). N(SINGLE BOND)BH3 substitution shifts to lower frequencies 4-H, C-3a, and C-7a resonances. The X-ray diffraction analysis of 2-(o-methoxyphenyl)benzothiazole N(SINGLE BOND)BH3 adduct is reported. Two new tetracyclic boron-bridged compounds were observed as by-products (6,9-(ethyl)-diaza-2-oxa-1-bora[3,4,7,8]-dibenzobycyclo[4.3.0]-nona-3,7-diene, 6d, and 8-aza-9-oxa-2-thia-1-bora-[3,4,7,8]dibenzobycyclo[3.4.0]nona-3,7-diene, 15d, when 2-(o-methoxyphenyl)-1-ethylbenzimidazole-BH36b and 2-(o-methoxyphenyl)-benzothiazole-BH315b adducts were heated



Producto de Investigación




Artículos relacionados

Pentacoordination at Germanium by Transannular Bonding of Sulfur or Oxygen in an Eight-Membered Ring...

Synthesis and crystal structure of the N-8-(diphenyl-hydroxy-2-aminomethylpyridine)borane

Hypervalence at tin(IV) by transannular bonding of sulfur in an eight-membered ring: The case of dib...

Synthesis and Crystal Structure of [Te{S(C6H3S)2O}]: A Tetracyclic Tellurium(II) Compound Displaying...

Synthesis, Characterisation and Properties of As-Monohalogenated Dibenzoarsocines S(C6H4S)2AsHal (Ha...

Boron and transition metal compounds derived from 2-uroylbenzimidazole

Determination of Glucose by Flow Injection Analysis with Amperometric Detection at Fe(III)-(tris(3,5...

Study of the D?Sb (D = O, S) Transannular Interaction in Sb-Monohalogenated Dibenzostibocines ? An E...

Synthesis and crystal structures of cis-palladium(II) and cis-platinum(II) complexes containing dipy...

Synthesis, characterization and crystal structures of organolead dithiolate compounds displaying tra...