IT1026755B - O,O-dimethyl-dithiophosphoryl-acetic acid N-monomethylamide - obtd from O,O-dimethyldithiophosphate, reaction with methyl-2-chloroacetate, then monomethylamine - Google Patents

O,O-dimethyl-dithiophosphoryl-acetic acid N-monomethylamide - obtd from O,O-dimethyldithiophosphate, reaction with methyl-2-chloroacetate, then monomethylamine

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Publication number
IT1026755B
IT1026755B IT3013774A IT3013774A IT1026755B IT 1026755 B IT1026755 B IT 1026755B IT 3013774 A IT3013774 A IT 3013774A IT 3013774 A IT3013774 A IT 3013774A IT 1026755 B IT1026755 B IT 1026755B
Authority
IT
Italy
Prior art keywords
dimethyl
reacted
degrees
acetic acid
dithiophosphoryl
Prior art date
Application number
IT3013774A
Other languages
Italian (it)
Inventor
Serdi Sergio
Grego Saverio
M Bornengo
Original Assignee
Montedison Spa
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Montedison Spa filed Critical Montedison Spa
Priority to IT3013774A priority Critical patent/IT1026755B/en
Priority to DE19752500452 priority patent/DE2500452A1/en
Priority to BR7500135A priority patent/BR7500135A/en
Priority to DD18356975A priority patent/DD118434A5/xx
Priority to ES433697A priority patent/ES433697A1/en
Priority to JP506275A priority patent/JPS5736915B2/ja
Priority to FR7500649A priority patent/FR2257597B1/fr
Priority to GB136775A priority patent/GB1485585A/en
Priority to US05/741,990 priority patent/US4083900A/en
Application granted granted Critical
Publication of IT1026755B publication Critical patent/IT1026755B/en

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Abstract

O,O-dimethyl-dithiophosphoryl acetic acid N-mono-methylamide (I) is prepd. by reacting phosphorosulphides with methanol in toluene to give O,O-dimethyl-dithiophosphoric acid (II) which is reacted with aq. alkali metal hydroxides or -carbonates to form the salts. The soln. is then reacted with 2- chloroacetic acid methyl ester (III) at pH 5.5-7 and 80-100 degrees for 10-15 min. and the product is purified by steam-distn. at 60-65 degrees at a reduced pressure of 140-150 mm Hg, the vol. ratio steam : ester being (0-25:1). The methylester obtained (IV) is reacted with aq. methylamine at 0-10 degrees C in the presence of a surface-active agent whereby a part of the slurry contg. (I) is refluxed back to the reactor. (I) is a known cpd. with insecticidal activity. The process may be continuous giving high yields of very high purity.
IT3013774A 1974-01-11 1974-12-03 O,O-dimethyl-dithiophosphoryl-acetic acid N-monomethylamide - obtd from O,O-dimethyldithiophosphate, reaction with methyl-2-chloroacetate, then monomethylamine IT1026755B (en)

Priority Applications (9)

Application Number Priority Date Filing Date Title
IT3013774A IT1026755B (en) 1974-12-03 1974-12-03 O,O-dimethyl-dithiophosphoryl-acetic acid N-monomethylamide - obtd from O,O-dimethyldithiophosphate, reaction with methyl-2-chloroacetate, then monomethylamine
DE19752500452 DE2500452A1 (en) 1974-01-11 1975-01-08 IMPROVED CONTINUOUS PROCESS FOR THE PREPARATION OF N-MONOMETHYLAMIDE OF O, O-DIMETHYL-DITHIO-PHOSPHORIC ACID ACID AS AN INSECTICIDE
BR7500135A BR7500135A (en) 1974-01-11 1975-01-09 CONTINUOUS PROCESS FOR THE PREPARATION OF N-MONOMETHYLAMIDE FROM O-DIMETHYL-DITIOPHOSPHORYL ACETIC ACID
DD18356975A DD118434A5 (en) 1974-01-11 1975-01-09
ES433697A ES433697A1 (en) 1974-01-11 1975-01-10 Preparation of the n-monomethylamide of 0,0-dimethyl-dithiophosphorylacetic acid
JP506275A JPS5736915B2 (en) 1974-01-11 1975-01-10
FR7500649A FR2257597B1 (en) 1974-01-11 1975-01-10
GB136775A GB1485585A (en) 1974-01-11 1975-01-13 Preparation of the n-monomethylamide of 0,0-dimethyl-dithiophosphorylacetic acid
US05/741,990 US4083900A (en) 1974-12-03 1976-11-15 Continuous process for the preparation of N-monomethylamide of O,O-dimethyl-dithiophosphoryl acetic acid

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
IT3013774A IT1026755B (en) 1974-12-03 1974-12-03 O,O-dimethyl-dithiophosphoryl-acetic acid N-monomethylamide - obtd from O,O-dimethyldithiophosphate, reaction with methyl-2-chloroacetate, then monomethylamine

Publications (1)

Publication Number Publication Date
IT1026755B true IT1026755B (en) 1978-10-20

Family

ID=11229191

Family Applications (1)

Application Number Title Priority Date Filing Date
IT3013774A IT1026755B (en) 1974-01-11 1974-12-03 O,O-dimethyl-dithiophosphoryl-acetic acid N-monomethylamide - obtd from O,O-dimethyldithiophosphate, reaction with methyl-2-chloroacetate, then monomethylamine

Country Status (1)

Country Link
IT (1) IT1026755B (en)

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