Process

Details Process Process

1975-12-15

1977-03-01

Sneed, Helen M. S.

Chemistry of carbon compounds

Miscellaneous organic carbon compounds

C-metal

260307R, 2603407, 2603459, 2603478, C07F 953

Patent

active

040102092

ABSTRACT:
A process is described for the preparation of phospholene-1-oxides and 1-sulfides having an aliphatic substituent in the 1-position, a double bond at the 2- or 3-positions and, optionally, having additional substituents at one or more of positions 2, 3, 4 or 5. The process comprises the reaction of a 1-(2-chloroalkoxy)-phospholene with the appropriate aliphatic alcohol or thiol optionally in the presence of an alkylation catalyst. Use of an aliphatic alcohol gives rise to a phospholene oxide while use of the corresponding thiol gives rise to a phospholene sulfide. The phospholene-1-oxides and 1-sulfides so obtained are useful as catalysts for the conversion of isocyanates to carbodiimides.

REFERENCES:
patent: 2663737 (1953-12-01), McCormack
patent: 2663738 (1953-12-01), McCormack
patent: 2663739 (1953-12-01), McCormack
patent: 2853473 (1958-09-01), Campbell et al.
patent: 2853518 (1958-09-01), Balon
patent: 3139449 (1964-06-01), Ahramjian
patent: 3331878 (1967-07-01), Priestley
patent: 3345287 (1967-10-01), Voetter et al.
Vizel J. Gen. Chem. (USSR), V43, No. 10, pp. 2137-2143 (1973).

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