Find the molecular structure Unknown 7, CSH12O4 OT 200 180 160 140 120 100 80 60...

Question

Question

Unknown 7, CSH12O4 OT 200 180 160 140 120 100 80 60 40 COS-00-100 20 ppm LOD NH SpcH Speu TL Tv D 4000 3000 1500 2000 L000 HA

na0N 구 2500 2400 2300 -2200 2100 2000 -1900 F1800 F1700 1600 1500 1400 -1300 1200 B -1100 -1000 -900 -800 700 600 -50 Tms -40

Find the molecular structure

Answer 1

Answer #1

C8H12O4: DU= 2(8)+2-12/2= 3

Compound is that CH3CH2OOCCH=CHCOOCH2CH3

Diethylfumarate or diethylmaleate.

CNMR: CH3- 14.6 , CH2- 62.3& =CH-130.3, C=O- 166.5

IR: 3100 for =CH stretch and at 2986 cm-1 for CH stretch and at 1725 for C=O stretch and at 1620 for C=C strech and at 1160 for C-O stretches.

HNMR: 6.80 , doublet, 2H, 4.30 , quartet 4H and 1.35 , triplet, 6H(2x3H)

Answer 2

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