re-amyl-1,2-benzopyran 180-182 190 .05 71 1.5575 80.23 9.30by the general procedure previously described.12 The tetramethyl -7,8,9,10 -tetrahydro -6 -dibenzoconstants of these molecules are given in Table III. l-Hydroxy-3-re-amyl-?-6,6-dimethyl-7,8,9,10-tetrahydro-6-dibenzopyrans.-The pyrans were formed in the usual way12; constants are given in Table IV.
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