Crystal structure of cis-1-phenyl-8-(pyridin-2-ylmethyl)dibenzo[1,2-c:2,1-h]-2,14-dioxa-8-aza-1-borabicyclo[4.4.0]deca-3,8-diene
نویسندگان
چکیده
The title compound, C26H23BN2O2, was obtained as by product during synthetic attempts of a complexation reaction between the tripodal ligand H2L [N,N-bis-(2-hy-droxy-benz-yl)(pyridin-2-yl)methyl-amine] and manganese(III) acetate in the presence of NaBPh4. The isolated B-phenyl dioxaza-borocine contains an N→B dative bond with a cis conformation. In the crystal, C-H⋯O hydrogen bonds define chains parallel to the b-axis direction. A comparative analysis with other structurally related derivatives is also included, together with a rationalization of the unexpected production of this zwitterionic heterocycle.
منابع مشابه
Crystal structures of two chiral piperidine derivatives: 1-[(1R)-2-hydroxy-1-phenylethyl]piperidin-4-one and 8-[(1S)-1-phenylethyl]-1,4-dioxa-8-azaspiro[4.5]decane-7-thione
The crystal structures of the two title piperidine derivatives show different conformations for the six-membered heterocycle. The N-substituted 4-piperidinone 1-[(1R)-2-hy-droxy-1-phenyl-eth-yl]piperidin-4-one, C13H17NO2, (I), has a chair conformation, while the piperidine substituted in position 2 with a thio-carbonyl group, 8-[(1S)-1-phenyl-eth-yl]-1,4-dioxa-8-aza-spiro-[4.5]decane-7-thione, ...
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متن کاملX-ray analysis and structural characterization of 2-phenyl-6-aza-1,3- dioxa-2-borabenzocyclononenones
Nine new monomeric boronates of the type 2-phenyl-6-aza-1,3-dioxa-2-borabenzocyclononen-4-ones (3a /3i) were prepared from N -(2-hydroxybenzyl)-a-aminoacids 1a /1i and phenylboronic acid 2 using 20:1 benzene /DMSO mixtures. The compounds were characterized by H-, C-, B-, Nand 2D-NMR (HETCOR, NOESY and COLOC) experiments, FT infrared, mass spectra and elemental analysis. Suitable monocrystals of...
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عنوان ژورنال:
دوره 73 شماره
صفحات -
تاریخ انتشار 2017