SKELETAL STABILIZATION - A BASIS FOR NEW CLASSES OF CYCLOPHOSPHAZANES

Authors
HANDS RM HELM M NOLL B NORMAN AD
Citation
Rm. Hands et al., SKELETAL STABILIZATION - A BASIS FOR NEW CLASSES OF CYCLOPHOSPHAZANES, Phosphorus, sulfur and silicon and the related elements, 125, 1997, pp. 285-293
Citations number
17
Journal title
Phosphorus, sulfur and silicon and the related elements → ACNP
ISSN journal
10426507
Volume
125
Year of publication
1997
Pages
285 - 293
Database
ISI
SICI code
1042-6507(1997)125:<285:SS-ABF>2.0.ZU;2-P
Abstract
Reactions involving skeletally stabilized intermediate phosphazanes yi eld new cyclophosphazanes. Thermolysis of C6H4(NH)(2)PPh (9) yields (P hP)(4) and the lambda(5) phosphazane [C6H4(NH)(2)](2)PPh (10); 10 upon cyclocondensation with PhPCl2 yields cis,trans- and cis,cis-spiro lam bda(3)-lambda(5)-lambda(3) phosphazanes [C6H4(N)(2)PPh](2)PPh (12). Re action of the bis(silyl) cyclophosphazane C6H4(NSiMe3)(2)PPh with PhPC l2 yields triphosphazane C6H4[NP(Ph)Cl](2)PPh (13); 13 with 1,2-(NH2)( 2)C6H4 forms cyclotriphosphazane C6H4(N2PPh) (PPh)(2)C6H4(NH)(2) (14) 14 is the key intermediate in formation of several new [(C6H4N2PPh)](2 )(PPh)(PR) (R = Ph, Me) cleft-containing cyclotetraphosphazanes (17). Synthesis and structural characterization of the new phosphazanes are described.