957-51-7 Usage
Chemical Properties
white or off-white powder
Uses
Different sources of media describe the Uses of 957-51-7 differently. You can refer to the following data:
1. Herbicide.
2. Selective preemergence herbicide used to control many broad-leaved weeds and most grass weeds in okra, cotton, peanuts tomatoes, sweet potatoes, potatoes, tobacco, fruits, turf and ornamentals.
3. Diphenamid is a pesticide found in representative agricultural produce (brown rice, orange, spinach and potatoes).
General Description
Colorless to off-white crystals. Used as an herbicide.
Reactivity Profile
DIPHENAMID is an amide. Amides/imides react with azo and diazo compounds to generate toxic gases. Flammable gases are formed by the reaction of organic amides/imides with strong reducing agents. Amides are very weak bases (weaker than water). Imides are less basic yet and in fact react with strong bases to form salts. That is, they can react as acids. Mixing amides with dehydrating agents such as P2O5 or SOCl2 generates the corresponding nitrile. The combustion of these compounds generates mixed oxides of nitrogen (NOx). DIPHENAMID is decomposed by strong base or acid.
Agricultural Uses
Herbicide: This material is used as a pre-emergent and selective
herbicide for tomatoes, peanuts, alfalfa, soybeans, cotton
and other crops. Not approved for use in the U.S. or EU
countries. There are 18 global suppliers.
Trade name
DIF 4?; DYMID?[C]; ENIDE?[C]; FDN?;
FENAM?; L 34314?; LILLY 34314?; RIDEON?; U
4513?; ZARUR?
Environmental Fate
Soil. Degradation of diphenamid in soils was reported to form desmethyldiphenamid via monodemethylation and a bidemethylated product of diphenamid (Somasundaram and Coats, 1991). The persistence of diphenamid under warm-moist soil conditions ranged from 3 to 6 months (Ashton and Monaco, 1991).Groundwater. According to the U.S. EPA (1986), diphenamid has a high potential to leach to groundwater.Plant. In strawberries, diphenamide was transformed via N-demethylation yielding Nmethyl-2,2-diphenylacetamide (Golab et al., 1966).Photolytic. N-Methyl-2,2-diphenylacetamide and benzoic acid were reported as major photoproducts following the UV irradiation of diphenamid in distilled water (Cessna and Muir, 1991).Chemical/Physical. Emits toxic fumes of nitrogen oxides when heated to decomposition (Sax and Lewis, 1987).
Check Digit Verification of cas no
The CAS Registry Mumber 957-51-7 includes 6 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 3 digits, 9,5 and 7 respectively; the second part has 2 digits, 5 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 957-51:
(5*9)+(4*5)+(3*7)+(2*5)+(1*1)=97
97 % 10 = 7
So 957-51-7 is a valid CAS Registry Number.
InChI:InChI=1/C16H17NO/c1-17(2)16(18)15(13-9-5-3-6-10-13)14-11-7-4-8-12-14/h3-12,15H,1-2H3
957-51-7Relevant articles and documents
Michejda
, p. 2281 (1968)
Direct defluorinative amidation-hydrolysis reaction of gem-difluoroalkenes with N,N-dimethylformamide, and primary and secondary amines
Wang, Biyun,Zhao, Xianghu,Liu, Qingyun,Cao, Song
, p. 8546 - 8552 (2018/12/01)
A novel and efficient method for the synthesis of arylacetamides by the reactions of gem-difluoroalkenes with N,N-dialkylformamides, and primary and secondary amines with the assistance of KOtBu and water was developed.
Synthesis of N,N-dimethyl α-aryl and α,α-diarylacetamides by radical nucleophilic substitution reactions
Palacios, S. M.,Asis, S. E.,Rossi, R. A.
, p. 111 - 116 (2007/10/02)
A family of N,N-dimethyl, α-aryl and α,α-diaryl acetamides was synthesized by reaction of aryl halides with N,N-dimethyl acetamide enolate ions in liquid ammonia.The reactions followed the SRN1 mechanism for nucleophilic substitution.They were initiated by light (350 nm), when the aryl halides or aryl halides bearing electron-donating groups were the substrate, and by potassium metal dissolved in liquid ammonia when the substituents on the aryl halides were electron-withdrawing groups. Key Words: SRN1 / nucleophilic substitution / synthesis / acetamide compounds / herbicides
Single-electron Transfer-initiated Thermal Reactions of Arylmethyl Halides, IX. The Reaction of 2-Bromo-N,N-dimethyl-2,2-diphenylacetamide with Triethylamine in Benzene
Simig, Gyula,Toth, Gabor
, p. 1273 - 1277 (2007/10/02)
Das Halogenamid 1a liefert mit Triethylamin in siedendem Benzol 41-48percent des Dimeren 3 als Hauptprodukt.Andererseits fuehrt die Thermolyse von 1f in Benzol in Gegenwart von Triethylamin zu 1c und 8a.Die Bildung von 3 erfolgt ueber die Radikale 4, die ihrerseits das Produkt einer Ein-Elektronen-Uebergangs-Reaktion mit Triethylamin als Elektron-Donor sind.Der Uebergang der Radikale 4 in das Dimere 3 verlaeuft entsprechend der Reaktionsfolge (2)+(4)+(5) (carbanionischer Mechanismus der Dimeren-Bildung).
