1,3‐Cyclobutanedione derivatives from ketene The dimerisation of ketene leads mainly to the methylidene‐β‐lactone ‘Diketene’ 2c. It is shown, that also a small amount of the symmetrical dimer, 1,3‐cyclobutadione 1c is produced, which under the reaction conditions is acetylated to 3‐acetoxycyclo‐butenone (5).
No takes yet. Share an insight, caveat, or question.
Tenud et al. (1977) studied this question.