Through nitrosation , hydrogenate reducion, and acylate three steps, the yield surpass 80 % for the diethyl malonate.收率相对于丙二酸二乙酯达到了80%以上.The necessary material of 2 - ( 2 - methoethyl ) acetaldehyde diethyl acetal was sy...
He produced "A Chorus Line", Broadway's longest running show.他制作推出了《歌舞线上》这一百老汇经久不衰的剧目。She shot to stardom on Broadway in a Noel Coward play.她因在百老汇出演了一部诺埃尔·科沃德的戏一炮而红。The play opened on Broadway in 2004.这个剧在2004年于百老汇首...