Novel isolable C,C-dichlorophosphaalkenes RP=CCl2 owing to the use of new huge stabilizing groups

Article abstract of DOI:10.1080/10426509908031627

Three new C,C-dichlorophosphaalkenes RP=CCl₂ 18-20 have been synthesized from the corresponding dichlorophosphines RPCl₂ 11-13. Compounds 18-20 are stabilized owing to the use of the very bulky new groups R¹ [2,6-bis(4-methylphenyl)-4-methylphenyl] and R³ [2,6-bis(2-methoxyphenyl)-4-methylphenyl] and the known 2,6-dimesityl-4-methylphenyl (R²). The compounds with a R³ group (R³I: 4, R³PCl₂: 13, R³PH₂: 17 and R³P=CCl₂: 20) exist in the form of two conformational isomers on the NMR time scale. A ¹H and ³¹P NMR dynamic study (for 4 and 13 respectively) allowed the determination of the ΔG^* of this phenomenon, respectively 18.5 and 18.2 kcal/mol.

Full text of DOI:10.1080/10426509908031627

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Phosphorus, Sulfur, and Silicon
and the Related Elements
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NOVEL ISOLABLE C,C-
DICHLOROPHOSPHAALKENES
RP=CCl2 OWING TO THE USE
OF NEW HUGE STABILIZING
GROUPS
L. Rigon a , H. Ranaivonjatovo a & J. Escudie a
a UPRES A 5069, Hétérochimie Fondamentale et
Appliquée , Université Paul Sabatier , 118 route de
Narbonne, 31062, Toulouse, Cedex 4, France
Published online: 24 Sep 2006.
To cite this article: L. Rigon , H. Ranaivonjatovo & J. Escudie (1999) NOVEL
ISOLABLE C,C-DICHLOROPHOSPHAALKENES RP=CCl2 OWING TO THE USE OF NEW HUGE
STABILIZING GROUPS, Phosphorus, Sulfur, and Silicon and the Related Elements, 152:1,
153-167, DOI: 10.1080/10426509908031627
To link to this article: http://dx.doi.org/10.1080/10426509908031627
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