Multipolar Framework Chemistry. Gallium- and Phosphorus-Containing Heterocycles.

Abstract A novel six-membered heterocycle with B, Ga, N, and P heteroatoms, Me2 GaCH 2 PMe 2 BH 2 CH 2 N Me2, is synthesized from a lithiated borane base. Its reaction with anhydrous acids leads to GaMe bond cleavage and formation of monosubstituted derivatives. A similar derivative chemistry pertains for the analogous heterocycle, Me2 GaCH 2 NMe 2 BH 2 CH 2 N Me2. Two related six-membered heterocycles with phosphonia atoms are also characterized, one with a thionia ring atom and one a spiroheterocycle with piperidine: Me2P(CH2BH2)2SMe and Me2P(CH2BH2)2N(CH2)2CH2.