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17O and 11B NMR spectroscopic study of substituted benzo[d]-2,2-difluoro-1,3,2-oxoniaoxaboratins

✍ Scribed by David W. Boykin; Arvind Kumar; Subramanian Chandrasekaran

Publisher
John Wiley and Sons
Year
1995
Tongue
English
Weight
440 KB
Volume
6
Category
Article
ISSN
1042-7163

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✦ Synopsis

Abstract

^17^O NMR data are reported for 10 benzo[d]‐2,2‐difluoro‐1,3,2‐oxoniaoxaboratins derived from various ortho‐hydroxyacetophenones and for 2,2‐difluoro‐1,3,2‐oxoniaoxaboratins derived from related hydroxyacetyl naphthalenes and hydroxybenzophenones. The signal for the carbonyl‐like oxygen for these compounds is substantially shielded and appears at 288 ± 22 δ. The single bonded oxygen signal for the 1,3,2‐oxoniaoxaboratins appears at 122 ± 6 δ, except for the naphthalene analogs, whose signal appears at 146 ± 10 δ. The ^11^B NMR signal for these compounds is insensitive to structural changes and appears at 0.85 ± 0.25 δ. © 1995 John Wiley & Sons, Inc.

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