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1978 (2)
1975 (1)
1Author    Requires cookie*
 Title    Cleavage Reactions o f 5-Arylazo Derivatives o f l-M ethyl-2-benzyl-2-im idazolin-4-ones  
 Abstract    N azm i A b d e l L a t if K a s s a b , A b d e l H a m id H a k h a s h , and S a n n a O sm a n A b d A lla h The 5-arylazo-l-methyl-2-benzyl-2-imidazolin-4-ones (la-c) undergo ring cleavage 
  Reference    (Z. Naturforsch. 30b, 603—605 [1975]; received March 10 1975) 
  Published    1975 
  Keywords    Rearrangement Reaction, 1, 2, 4-Triazinones, Grignard Reaction 
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 TEI-XML for    default:Reihe_B/30/ZNB-1975-30b-0603.pdf 
 Identifier    ZNB-1975-30b-0603 
 Volume    30 
2Author    NazmiA. Kassab, Sanaa0. Abd, Allah, SaidA. Elb, AhA. TiRequires cookie*
 Title    Arylazoisoxazolinthiones: Preparation and Reactions of 4-Arylazo-3-methyl-2-isoxazolin-5-thiones  
 Abstract    The arylazo derivatives (2) of 3-methyl-2-isoxazolin-5-thione were prepared. Alkylation 
  Reference    (Z. Naturforsch. 33b, 75—79 [1978]; received August 24 1977) 
  Published    1978 
  Keywords    ) Alkylation, Grignard's Reaction, Arylazoisoxazolinimines, Arylazoisoxazolinhydrazones, Ring Cleavage 
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 TEI-XML for    default:Reihe_B/33/ZNB-1978-33b-0075.pdf 
 Identifier    ZNB-1978-33b-0075 
 Volume    33 
3Author    NazmiA. Kassab, AbdulHammid Harhash, SaidA. ElbahaiiRequires cookie*
 Title    Cleavage Reactions of Oxazolin-5-ones Reactions with 4-Substituted-2-aryl-2-oxazolin-5-ones  
 Abstract    The oxazoline ring in 4-arylazo-2-aryl-2-oxazolin-5-ones (1) is converted to triazolyl-carbonyl amino acids 2, 4 and 6 by the nucleophiles glycine, anthranilic and p-aminobenzoic acids, respectively. The arylidene derivatives 3 of 2-triazolyl-2-oxazolin-5-one were obtained. Triazolylbenzoxazinones 5, were obtained by the ring closure of the amino acid 4. Grignard's reagent effected ring cleavage of the oxazolinone ring in 4-cinnamylidene-2-aryl-2-oxazolin-5-ones yielding the carbinols 8, the latter cyclizes either in acidic or alkaline medium to afford either benzotropilidenes or oxazolines, respectively. 
  Reference    Z. Naturforsch. 33b, 1145—49 (1978); received April 7/June 22 1978 
  Published    1978 
  Keywords    Ring Cleavage, Triazolylcarbonyl Amino Acids, Nucleophilic Substitution, Grignard's Reaction, Ring Closure 
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 TEI-XML for    default:Reihe_B/33/ZNB-1978-33b-1145.pdf 
 Identifier    ZNB-1978-33b-1145 
 Volume    33