Wrackmeyer, Bernd; Wagner, Klaus; Boese, Roland:
Reactions of cis-stannyl(boryl)alkenes with sulfur bis(trimethylsilylimide) and N-sulfinyl(trimethylsilyl)amine. X-ray analysis of an 1-amino-1l4-thia-2-azonia-3-borata-1,4-cyclopentadiene.
1993
In: Chemische Berichte (Chem.Ber.), Jg. 126 (1993), Heft 3, S. 595 - 599
Artikel/Aufsatz in Zeitschrift1993Chemie
Titel:
Reactions of cis-stannyl(boryl)alkenes with sulfur bis(trimethylsilylimide) and N-sulfinyl(trimethylsilyl)amine. X-ray analysis of an 1-amino-1l4-thia-2-azonia-3-borata-1,4-cyclopentadiene.
Autor(in):
Wrackmeyer, Bernd; Wagner, Klaus; Boese, RolandLSF
Erscheinungsjahr
1993

Abstract:

New heterocyclic systems 1-amino-1l4-thia-2-azonia-3-borata-1,4-cyclopentadienes (I, R1 = H, Me), 1l4-thia-2-aza-3-bora-1-cyclopentanone (II), and 1-trimethylstannyloxy-1l4-thia-2-azonia-3-borata-1,4-cyclopentadiene (III) are formed by reaction of (E)-2-diethylboryl-1-trimethylstannyl-1-butene and (E)-3-diethylboryl-2-trimethylstannyl-2-pentene with Me3SiN:SNSiMe3 and Me3SiN:S:O. There is a marked influence of other substituents at the C:C bond on the product distribution. All reactions proceed via an intermediate borane adduct in which the proximity of the electrophilic sites to various reactive sites of the alkene deriv. opens the way to the final products. The proposed structures are supported by consistent 1H-, 11B-, 13C-, 29Si- and 119Sn-NMR data. In the case of compd. I (R1 = H), an X-ray anal. has been carried out.