126795-75-3Relevant academic research and scientific papers
Structural studies of organoboron compounds. XXXVII. 8,8-Pentamethylene-6-phenyl-6,9-epoxy-5,7-dioxa-8-azonia-6-borata-6,7,8,9-tetrahydro-5H-benzocycloheptene
Kliegel, Wolfgang,Motzkus, Hans-Walter,Drueckler, Klaus,Rettig, Steven J.,Trotter, James
, p. 64 - 68 (2007/10/02)
Condensation of equimolar amounts of salicylaldehyde, N-hydroxypiperidine, and phenylboronic acid yields the title compound.Crystals of 8,8-pentamethylene-6-phenyl-6,9-epoxy-5,7-dioxa-8-azonia-6-borata-6,7,8,9-tetrahydro-5H-benzocycloheptene are monoclinic, a = 12.773(1), b = 11.9600(7), c = 10.6411(6) Angstroem, β = 103.786(7) deg, Z = 4, space group P21/c.The structure was solved by direct methods and was refined by full-matrix least-squares procedures to R = 0.039 and Rw = 0.047 for 2420 reflections with I 3?(I).The compound has a bridged heterocyclic B,N-betaine structure with a PhB(OR)3 anionic centre.Bond length (corrected for libration) include: B-O(aryl C) = 1.481(2), B-O(alkyl C) = 1.488(2), B-O(N) = 1.539(2), and B-C = 1.591(2) Angstroem.
