ISSN:
0009-2940
Keywords:
1,2,4-Thiadiphosphetanes
;
1,2,4-Selenadiphosphetanes
;
Thioxophosphanes
;
Selenoxophosphanes
;
Ylides
;
Phosphane elimination
;
Chemistry
;
Inorganic Chemistry
Source:
Wiley InterScience Backfile Collection 1832-2000
Topics:
Chemistry and Pharmacology
Notes:
Phosphoniumylidyl thioxophosphanes and selenoxophosphanes, the only known monomeric chalcogenoxophosphanes, react in a 2:1 ratio with triphenylphosphonium ylides. With loss of PPh3 the 1,2,4-thia(or selena)diphosphetane monosulfides (or selenides) are formed. Their prominent structural feature are the very different PS bond lengths in the ring. They can be oxidized to the corresponding disulfides or sulfide selenides. The latter rearrange to the isomer in which the selenium atom has become a ring member.
Additional Material:
1 Ill.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1002/cber.19951281009
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