ChemInform Abstract: Neighboring Group Effects on the Rates of Thermolysis of 4- Azidothiazoles.
Abstract
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ChemInform Abstract
Rate of thermolysis of a number of 4-azidothiazoles of type (I) leading to cyclized products is studied. The presence of nitro and phenyliminomethyl groups at position 5 causes significant rate enhancement, while the enhancement is quite small for formyl and acetyl groups. The 2-substituent, on the other hand, has little effect on the rate. The effects are very similar to those obtained for 3- azidothiophenes, but in azidobenzenes the rate increases are much larger.
