作者:C.C. McCarney、R.S. Ward、D.W. Roberts
DOI:10.1016/0040-4020(76)85044-2
日期:1976.1
Treatment of dimethyl ketene with ethoxyacetylene 1a, 1-ethoxyoct-1-yne 1b, and 1-ethoxytetrade-1-yne 1c afforded the 3-ethoxycyclobutenones 2a–c. Hydrolysis of 2a–c with dilute hydrochloric acid gave the cyclobutane-1,3-diones 3a–c. The 1H NMR spectra of these compounds indicate that in CDCl3 solution 2,2-dimethylcyclobutane-1,3-dione 3a exists as the diketone, whereas the 2,2,4-trialkylcyclobutane-1
与乙氧基乙炔二甲基烯酮的治疗1A,1- ethoxyoct -1-炔1B和1- ethoxytetrade -1-炔1C,得到3- ethoxycyclobutenones 2a-c中。用稀盐酸将2a–c水解,得到1,3-环丁烷3a–c。这些化合物的1 H NMR光谱表明,在CDCl 3溶液中,存在2,2-二甲基环丁烷-1,3-二酮3a作为二酮,而2,2,4-三烷基环丁烷-1,3-二酮3b和3c存在。作为单烯醇。