and structurally important methanobenzo[7]annulenes were synthesized in very good yields with excellent enantio‐ and diastereoselectivities through an unprecedented organocatalytic formal [3+2] cycloaddition from readily available 2‐alkyl‐3‐hydroxynaphthalene‐1,4‐diones and alkyl vinyl ketones.
药学上和结构上重要的
甲氧基苯并[7]
环戊烯可通过空前的2-烷基-3-羟基
萘-1,4-二酮和烷基的空前的有机催化形式[3 + 2]环加成反应以良好的对映异构和非对映选择性很好地合成。
乙烯基酮。