Efficient highly diastereoselective synthesis of 1,8a-dihydro-7H-imidazo[2,1-b][1,3]oxazines
作者:Mehdi Adib、Esmaeil Sheibani、Manizheh Mostofi、Khadijeh Ghanbary、Hamid Reza Bijanzadeh
DOI:10.1016/j.tet.2006.01.048
日期:2006.4
1-Alkyl imidazoles react smoothly with dialkyl acetylenedicarboxylates in the presence of pyridine carboxaldehydes to diastereoselectively produce 1,8a-dihydro-7H-imidazo[2,1-b][1,3]oxazine derivatives in excellent yields.
1-烷基咪唑与吡啶二羧酸二烷基酯在吡啶甲醛的存在下平稳反应,以优异的产率非对映选择性地生产1,8a-二氢-7 H-咪唑并[ 2,1- b ] [1,3]恶嗪衍生物。