(a) It is an example of Curtius reaction.
(b) It is an example of Lossen rearrangement reaction.
( c) It is an example of Hofmann bromamide rearrangement reaction.
(d) It is an example of Lossen rearrangement reaction.
( e) Claisen-Schmidt rearrangement type reaction. Proceed direct, put `(NH)` group between `(Me)` and `(C=O)` groups (less `EDG` migrates, `ED` order `Ar gt H gt R`)
(f) Similar to problem `(e)` above. Proceed direct, put `(NH)` between `(Ph)` and `(C= O)` groups.
(g) It is an example of Lossen rearrangement reaction.
(h) It is an example of Arndt-Eistert rearrangement reaction.
(i) It is an example of Reformatsky reaction.
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