(RS)-1-[4-(allymethylamino)-2,2,5,5-tetramethyloxazolidin-3-yl]-propenone 在
tricyclohexylphosphine[1,3-bis(2,4,6-trimethylphenyl)imidazol-2-ylidene][3-phenyl-1H-indenylidene] ruthenium (II) dichloride 作用下,
以
甲苯 为溶剂,
以74%的产率得到(RS)-1,7,7,9,9-pentamethyl-9,9a-dihydro-2H-oxazolo[4,3-b][1,3]diazepin-5-one