ZfN: Search Results

1	Author		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

2	Author	NazmiA. Kassab, Sanaa0. Abd, Allah, SaidA. Elb, AhA. Ti	Requires 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

3	Author	NazmiA. Kassab, AbdulHammid Harhash, SaidA. Elbahaii	Requires 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