4a-methyl-5,6,7,8-tetrahydro-2(4aH)-naphthalenone 、
天然橡胶 在
三氯化铝 作用下,
生成 4aβ,7-dimethyl-1,2,3,4,4a,4bβ,5,8-octahydro-9(8aβH)-phenanthrenone 、 4aβ,7-dimethyl-1,2,3,4,4a,4bβ,5,8-octahydro-9(8aβH)-phenanthrenone 、
4β,7-dimethyl-4α,4aα-tetramethylene-4,4a,5,8-tetrahydro-1(8aαH)-naphthalenone 、
4β,7-dimethyl-4α,4aα-tetramethylene-4,4a,5,8-tetrahydro-1(8aβH)-naphthalenone