参考文献:US6699909, 2004, B1;EP2045243, 2009, A1;US2009/275607, 2009, A1;Journal of the Chemical Society, 1924, vol.125, p.2191;Journal of the Chemical Society, 1951, p.1376;Acta Chimica Academiae Scientiarum Hungaricae, 1955, vol.5, p.111,114;Bulletin de la Societe Chimique de France, 1982, vol.2, #5-6, p.161-166;Organic and Biomolecular Chemistry, 2015, vol.13, #20, p.5656-5673