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Volumn 48, Issue 5, 2007, Pages 767-770

N,N′-Dichloro bis(2,4,6-trichlorophenyl)urea (CC-2): an efficient reagent for the synthesis of α-chloro-nitroso compounds

Author keywords

Chloro nitroso alkanes; Bis (2,4,6 trichlorophenyl)urea; CC 2; N,N Dichloro bis(2,4,6 trichlorophenyl)urea; Oximes; tert Butyl hypochlorite

Indexed keywords

ALPHA CHLORONITROSO DERIVATIVE; CARBANILAMIDE DERIVATIVE; N,N' DICHLORO BIS(2,4,6 TRICHLOROPHENYL)UREA; NITROSO DERIVATIVE; REAGENT; UNCLASSIFIED DRUG;

EID: 33846003545     PISSN: 00404039     EISSN: None     Source Type: Journal    
DOI: 10.1016/j.tetlet.2006.12.001     Document Type: Article
Times cited : (14)

References (35)
  • 34
    • 33846004709 scopus 로고    scopus 로고
    • -1.
  • 35
    • 33846030086 scopus 로고    scopus 로고
    • Preparation of N,N′-dichloro bis(2,4,6-trichlorophenyl)urea (CC-2): Bis(diphenyl)urea (25 g, 0.117 mol) was dissolved in 200 mL of acetic acid and 20 mL of pyridine was added followed by stirring at 70 °C. Chlorine gas was bubbled into the reaction for 4 h with stirring. Absorption of chlorine ceased with complete precipitation of bis(2,4,6-trichlorophenyl)urea. The mixture was cooled to 10 °C in an ice bath, and solid NaOH (7 g) was added in portions to bring the pH of the mixture to almost neutral. Chlorine gas was passed through until all the organic matter had re-dissolved. The mixture was poured into water to precipitate the CC-2, which was washed with water, filtered and re-crystallized from toluene. After drying, the yield was 56 g, 98%, mp 179-180 °C. The chlorine content of CC-2 was checked by standard iodometric titration and was found to be 14.51% (theoretical value 14.54%).


* 이 정보는 Elsevier사의 SCOPUS DB에서 KISTI가 분석하여 추출한 것입니다.