	US 11,753,423 B2
	Method for producing herbicide intermediate
Hirotaka Nagata, Tokyo (JP); Nobuto Minowa, Tokyo (JP); Nozomu Nakanishi, Tokyo (JP); Katsuya Shimura, Ibaraki (JP); and Tadahiro Fujitani, Ibaraki (JP)
Assigned to MMAG Co. Ltd, Tokyo (JP); and NATIONAL INSTITUTE OF ADVANCED INDUSTRIAL SCIENCE AND TECHNOLOGY, Tokyo (JP)
Filed by MMAG Co., Ltd., Tokyo (JP); and National Institute of Advanced Industrial Science and Technology, Tokyo (JP)
Filed on Mar. 8, 2022, as Appl. No. 17/689,178.
Application 17/689,178 is a continuation of application No. 16/629,742, granted, now 11,306,110, previously published as PCT/JP2018/025543, filed on Jul. 5, 2018.
Claims priority of application No. 2017-135963 (JP), filed on Jul. 12, 2017; and application No. 2018-069264 (JP), filed on Mar. 30, 2018.
Prior Publication US 2022/0194970 A1, Jun. 23, 2022
Int. Cl. C07F 9/08 (2006.01)

CPC C07F 9/08 (2013.01)

1 Claim

1. A method for producing methyldichlorophosphane, the method comprising:

reacting methane and phosphorus trichloride in the presence of an additive and of a metal compound, or a metal compound carried on a carrier, or both thereof,

wherein the additive is selected from the group consisting of oxygen, chlorine, and a combination thereof,

wherein the metal compound or the metal compound in the metal compound carried on the carrier is an alloy,

wherein the alloy is a nickel-iron alloy consisting of two kinds of metals that are nickel and iron,

wherein the carrier in the metal compound carried on the carrier is selected from the group consisting of activated carbon, alumina, magnesia, ceria, titania, silica gel, silica alumina, zirconia, zeolite, hydrotalcite, diatomite, cordierite, and combinations of two or more kinds thereof,

wherein methyldichlorophophonic acid is not formed as a by-product during production of methyldichlorophosphane.