4- MethyI-3-heptene

A DEPT experiment is usually done in three stages, as shown in Figure 13.10 for 6-methyi-5-hepten-2-oi. The first stage is to run an ordinary spectrum (called... 

Dlmethylamlnomethyl) 2-methyi-6-heptene-2-ol (2).3 2-Metftyi-5-(dlmethylcarbInol)-N,N-dlmethylpiper1dinium Iodide 1 (1.90 g. 10 mmol) was dissolved in distilled water and treated with freshly prepared AgjO. The mixture was filtered and concentrated under vacuum to a syrup The residue was heated at about 150°C and 0.3 mm and distilled to afford 0.85 g (75%) of 2, bp 50 C (0 5 mm). 

Cyclisation of a stirred mixture of 3-methyi-6-(6-methyi-5-hepten-2-yi)-2,4-hexadienoic acid in refluxing acetic anhydride containing fused sodium acetate during 30 hours led to 5-methyl-2-(6-methyl-5-hepten-2-yl)phenyl acetate in 70% yield (ref.60). 

Hepten-2-one, 5-(1 -methylethyl)-7-(tetrahydro-4-hydroxy-2-methyI-2-furanyl)- 943,944, 1156,4090. 4249, 4780 ... 

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