If, as suggested in preceding reports, lP2 the extent of abnormal reaction of an heteroarylmethyl Grignard reagent is a criterion of the aromatic character of the nucleus, or more accurately a measure of the interaction of the neighboring unsaturation with the remainder of the nucleus, the position of the halomethyl group in an unsymmetrical nucleus should not affect the ratio of the two types of product.
![Benzo[b]thiophene,2-bromo-3-methyl- Structure](https://image.chemsrc.com/caspic/077/5381-23-7.png)
![1-Propanone,1-benzo[b]thien-3-yl- Structure](https://image.chemsrc.com/caspic/455/19492-96-7.png)
