- ALCOHOLYSIS OF 1,2-BIS(1-ISOCYANATO-1-METHYLETHYL)DIAZENE: UNEXPECTED FORMATION OF 5,5-DIMETHYL-1,2,4-TRIAZOLIN-2-ONE
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From the reaction of the bis(isocyanatoalkyl)diazene 1 with alcohols the expected adducts 2 could not be isolated (though there is spectroscopic evidence of their formation).The main product obtained was the triazolin-3-one 3, and in addition, several complementing products 4-6 were formed.
- Schantl, Joachim G.,Gstach, Hubert,Lanznaster, Norbert
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p. 1439 - 1444
(2007/10/02)
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- Efficient Synthesis of 5,5-Dialkyl-Δ1-1,2,4-triazolin-3-ones by Acid Hydrolysis of Bis(α-isocyanatoalkyl)diazenes
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The hydrolysis of bis(α-isocyanatoalkyl)diazenes with hydrochloric acid affords the novel 5,5-dialkyl-Δ1-1,2,4-triazolin-3-ones in good yields, and as a minor by-product, the corresponding 4-aminocarbonyl derivatives.The 1,2,4-triazolin-3-ones are easily converted into the 4-benzoyl derivatives which, in turn, react as mild benzoylating agents toward primary amines.
- Schantl, Joachim G.,Gstach, Hubert,Lanznaster, Norbert
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p. 986 - 989
(2007/10/02)
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