Cyclization Reactions Involving 2-Aminoarenetellurols and Derivatives of α,β-Unsaturated Carboxylic Acids

Figure 3

Previously reported preparation of methyl (Z)-2-(5,7-dimethyl-3-oxo-3,4-dihydro-2(H)-benzo[b] [1, 4]tellurazin-2-ylidene)acetate.