
Abstract
Five new anellated 4H-1,4,2-diazaphospholes including the first examples of chiral 4H-1,4,2-diazaphospholes with the (-)-menthyl substituent have been prepared by two main routes: Hantzsch type cyclocondensation of 4-phenyl-2-amino-1,3-thiazole with chloromethyl dichlorophosphine and 4+1 cyclocondensation of cycloimmonium salts derived from 4-phenyl-2-amino-1,3-thiazole and 2-aminopyridine with PCl3 and NEt3. The new compounds have been characterized by multinuclear (H-1, C-13, P-31) NMR spectroscopy. Controlled hydrolysis of 5-phenylthiazolo3,2-d]1,4,2]diazaphosphole 2a with two equivalents of water yields the corresponding zwitterionic phosphinate 9, the structure of which was elucidated by single crystal X-ray diffraction. The structure in the solid state is governed by strong N-H center dot center dot center dot O hydrogen bonding resulting in chains along the crystallographic a-axis. The chloroform molecules are integrated in the chains by weaker C-H center dot center dot center dot O bonds and C-Cl center dot center dot center dot C halogen bonds.
Item Type: | Journal article |
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Form of publication: | Publisher's Version |
Faculties: | Chemistry and Pharmacy > Department of Chemistry |
Subjects: | 500 Science > 540 Chemistry |
URN: | urn:nbn:de:bvb:19-epub-22692-6 |
ISSN: | 1144-0546 |
Place of Publication: | THOMAS GRAHAM HOUSE, SCIENCE PARK, MILTON RD, CAMBRIDGE CB4 0WF, CAMBS, ENGLAND |
Annotation: | First publ. online. Print publ. 2013 |
Language: | English |
Item ID: | 22692 |
Date Deposited: | 04. Feb 2015, 10:07 |
Last Modified: | 04. Nov 2020, 13:03 |