二溴甲烷

(甲硫基)乙酸乙酯

环己酮

ethyl 3-(methylthio)-4-thia-1,2-diazaspiro[5.5]undec-2-ene-5-carboxylate

ethyl 3-(methylthio)-1-(2,2,2-trifluoroacetyl)-4-thia-1,2-diazaspiro[5.5]undec-2-ene-5-carboxylate