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27th September 2011 @ 02:03

Hazard and Risk Assessment:

As for MNR8-1

To a mixture of formaldehyde solution (1.11 ml, 12.55 mmol), 2,2-dimethoxyethylamine (1.82 mL, 12.55 mmol) and cyclohexanecarboxylic acid (1.56 mL, 12.55 mmol) in methanol (10 mL) was added slowly 2-(3,4-Dimethoxyphenyl)ethyl isocyanide MNR4-1 (2.4 g, 12.55 mmol) and stirred at room temperature for 24 h. EtOAc (20 mL) was then added to the reaction and was washed with 1 M HCl (20 mL), sat. NaCO3 solution (20mL) and brine (20 mL), dried over MgSO4, filtered and concentrated.

Crude:- 4.994 g as a dark orange oil

FCC 2.882 g, 6.20 mmol, 49 % as a clear oil - why such a low yiels and low recovery from the column??

1H NMR MNR8-2 similar to MNR8-1

Lab book page complete, MNR
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MNR8-2 scheme.png
MNR8-2 table.PNG