Question

need help analyzing nmr ( structure and calculations)

C raker Topspin).2.61 - 5 [1] 500 00€ 200 100 1.0000 5.4 4.8 (ppm) group Ohe group 131. of our product

Answer 1

Structure 5.358 (singlet) 1740-1750 ont 3.9-4. 08 (quartet) 0 - Chy CH₃ 3-3-3.48 5.158 (singlet) . 1.2-1. 38 (triplet) Tsinglet) peak multiplicity is according to (n +1) Bule. Where n-is the protons present on neighbouring atom. Chemical shift value depends upon the effects i.e. Inductive & resonance effect I strong electon withdrawing group or an electronegative atom is present then such protons have high chemical shift je. appear L'at down hield In above reaction starting compound has two carbonyl group. In this reaction protection of kerone functional group takes place