UV homework for polyenes The following polyenes have lambda_max values of 382, 2

Question

UV homework for polyenes

The following polyenes have lambda_max values of 382, 294, 249, 318, 234, and 244 nm. Assign the lambda_max to each structure. The following unsaturated ketones have lambda_max, values of 254, 239, 324, 249, 244, and 389 run. Assign each lambda_max to the corresponding structure. A compound, C_11 H_16, has a lambda_max of 288 nm. On treatment with Pd/C (which dehydrogenates cyclic compounds completely to aromatic compounds without rearrangement), alpha -methylnaphthalene (below) is produced. What is the structure of A

Explanation / Answer

1.

= 318 nm

=  244 nm

= 382 nm

= 234 nm

= 249 nm

= 294 nm

2.

= 249 nm

= 244 nm

= 389 nm

= 254 nm

= 326 nm

= 239 nm

3.

compound A is

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