Subject: CCL:Help NMR

From: [email-masked]
Date: Fri, 27 Jan 1995 10:43:51 -0800 (PST)

Dear netters:

	I have following difficulties in interpreting the NMR of 
			CH3
			 |
			 C
		      /  |  \ 
		     CH2 OH ||
		      |
the compound:        CH2  H
		       \ /
		        C
			||
		 	O

	5-hexenal, 4-methyl-4-hydroxy

The problem is that the NMR peaks of carbonyl proton and alcohol 
proton are missing. Is it possible that these two proton form 
hydrogen bond and shift their NMR peaks to somewhere else? Or some
other mechanisms exist. I am a graduate student and just ente
r
this field. Any help or possible references will be appreciated.

Sincerely;

Yonghui Shu