1-(7-tert-butyl-3,3-dimethyl-2,3-dihydrobenzo[b]furan-5-yl)-3-methyl-2-buten-1-one

7-tert-butyl-3,3-dimethyl-2,3-dihydrobenzo[b]furan-5-yl carboxylic acid chloride

1 -(7-tert-butyl-3,3-dimethyl-2,3-dihydrobenzo[b]furan-5-yl)-2-chloroethan-1-one