[2 + 2] Cycloaddition Reactions of Butadienyl Ketene with 1,4‐Diazabuta‐1,3‐dienes: Synthesis of Functionalized Butadienyl‐4‐iminomethyl‐azetidin‐2‐ones and Butenylidene‐butadienyl‐[2,2′‐biazetidine]‐4,4′‐diones |
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| Authors: | Deepak Bains Yogesh Kumar Prabhpreet Singh Gaurav Bhargava |
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| Institution: | 1. Department of Applied Sciences, Punjab Technical University, Kapurthala, Punjab, India;2. Department of Chemistry, Guru Nanak Dev University, Amritsar, Punjab, India |
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| Abstract: | The reactions of butadienylketene with variety of 1,4‐diazabuta‐1,3‐dienes are studied. The reactions resulted in the formation of previously unknown functionalized cis butadienyl‐4‐iminomethyl‐azetidin‐2‐ones and butenylidene‐butadienyl‐2,2′‐biazetidine]‐4,4′‐ diones. Butadienyl ketene reacts in 2+2] cycloaddition fashion with both iminic portion of 1,4‐ diazabuta‐1,3‐dienes and competitive 4+2] cycloaddition reaction of 1,4‐diazabuta‐1,3‐dienes as 4π component with butadienyl ketene as 2π component are not observed. |
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