methyl 2-bromo-2-(triphenyl-λ⁵-phosphanylidene)acetate

methyl 2-(5-oxo-4-phenylfuran-2-ylidene)acetate

3-(m-甲基苯基)-1-丙醇

2,3-丁二烯酸甲酯

methyl 2-iodo-2-(triphenyl-λ⁵-phosphanylidene)acetate