The sequence in the margin is a rapid synthesis of one of the heterocycles in this chapter Draw the structure of the product, which has 1 H NMR spectrum F 'H NMR 1 H 1 H 3 H 1H 9 2 8 5 8 4 7 9 7 8 7 7 7 6 7 5 (CH3)4Si 1H 9 5 9 0 8 5 8 0 7 5 7 0 6 5 6 0 5 5 5 0 4 5 4 0 3 5 3 0 2 5 2 0 1 5 1 0 0 5 0 ...

The given reaction conditions and nmr data the forming heterocyclic compounds is isoqu ...

The sequence in the margin is a rapid synthesis of one of the heterocycles in this chapter.

Question:

The sequence in the margin is a rapid synthesis of one of the heterocycles in this chapter. Draw the structure of the product, which has ¹H NMR spectrum F.

'H NMR 1 H 1 H 3 H 1H. 9.2 8.5 8.4 7.9 7.8 7.7 7.6 7.5 (CH3)4Si 1H 9.5 9.0 8.5 8.0 7.5 7.0 6.5 6.0 5.5 5.0 4.5 4.0 3.5 3.0 2.5 2.0 1.5 1.0 0.5 0.0 300-MHz 'H NMR spectrum ppm (8) F