Claims
- 1. A process for the sulfurization of phosphorus-containing compounds which comprises contacting the phosphorus compound to be sulfurized with a sulfur transfer reagent of formula (I)
- 2. A process according to claim 1 wherein
R1 is phenyl, tolyl, xylyl, naphthyl, 4-chlorophenyl or anisyl, and R2 is methyl, ethyl, propyl or isopropyl.
- 3. A process according to claim 1 wherein the sulfur transfer reagent is a compound of formula (II)
- 4. A process according to claim 1 wherein the phophorus-containing compound is a trivalent phosphorus compound.
- 5. A process according to claim 4 wherein the trivalent phosphorus compound is a compound of formula (III)
- 6. A process according to claim 5 wherein R5 is —CH2CH2CN, —CH2—CH═CH—CH2CN, —CH2CH2-4-nitrophenyl or —CH2CH═CH2
- 7. A process according to claim 1 wherein the sulfur transfer reagent is used in an amount of 1-30 molar equivalents, relative to the amount of the phosphorus compound.
- 8. A process according to claim 1 wherein the reaction is carried out in the presence of a solvent selected from pyridine, DMF, THF, acetonitrile and methylene chloride.
- 9. A process according to claim 2 wheein the phosphorus-containing compound is a trivalent phosphorus compound.
- 10. A process according to claim 3 wherein the phosphorus-containing compound is a trivalent phosphorus compound.
- 11. A process according to claim 7 wherein the sulfur transfer reagent is used in an amount of 2-10 molar equivalents.
- 12. A process according to claim 8 wherein the solvent is acetonitrile.
Parent Case Info
[0001] This is a continuation-in-part of U.S. application Ser. No. 09/168,447, filed Oct. 8, 1998.
Continuations (1)
|
Number |
Date |
Country |
Parent |
09416031 |
Oct 1999 |
US |
Child |
10266027 |
Oct 2002 |
US |
Continuation in Parts (1)
|
Number |
Date |
Country |
Parent |
09168447 |
Oct 1998 |
US |
Child |
09416031 |
Oct 1999 |
US |