Selective acylation of a sterically hindered hydroxyl group of unsymmetrical diols containing a primary hydroxyl group such as 1,5-hexanediol in the presence of silica gel with acetyl chloride

2003 ◽  
Vol 16 (6) ◽  
pp. 355-358 ◽  
Author(s):  
Haruo Ogawa ◽  
Yuko Ide ◽  
Ryoichi Honda ◽  
Teiji Chihara
Keyword(s):  
Silica Gel ◽  
Acetyl Chloride ◽  
Hydroxyl Group ◽  
Primary Hydroxyl ◽  
Selective Acylation ◽  
Sterically Hindered

scholarly journals A Phosphonium Ylide as an Ionic Nucleophilic Catalyst for Primary Hydroxyl Group Selective Acylation of Diols

ACS Catalysis ◽  
2017 ◽  
Vol 7 (9) ◽  
pp. 6150-6154 ◽  
Author(s):  
Yasunori Toda ◽  
Tomoyuki Sakamoto ◽  
Yutaka Komiyama ◽  
Ayaka Kikuchi ◽  
Hiroyuki Suga
Keyword(s):  
Hydroxyl Group ◽  
Primary Hydroxyl ◽  
Selective Acylation

LYCOCTONINE AND ITS OXIDATION PRODUCTS

1952 ◽  
Vol 30 (9) ◽  
pp. 627-645 ◽  
Author(s):  
O. E. Edwards ◽  
Léo Marion
Keyword(s):  
The Other ◽  
Oxidation Products ◽  
Hydroxyl Group ◽  
Ultraviolet Spectra ◽  
Primary Hydroxyl ◽  
Alkyl Groups ◽  
Methylene Group

The ultraviolet spectra, basic strengths, and N-alkyl groups of the aconite alkaloids are discussed. Pyropseudaconine has been shown to contain a conjugated system. The formulation C19H19–2,(OH)3,(OCH3)4NC2H5 has been confirmed for lycoctonine. Study of its oxidation products has shown that lycoctonine has a methylene group adjacent to the nitrogen and a primary hydroxyl group. The two remaining hydroxyls have been shown to be vicinal, with one probably secondary and the other tertiary. A carbinolamine structure is suggested for hydroxylycoctonine. The new bases, isolycoctonine, desoxylycoctonine, and des-(oxymethylene)-lycoctonine are described.

ChemInform Abstract: A Convenient Determination of Surface Hydroxyl Group on Silica Gel by FT-IR Spectroscopy.

ChemInform ◽  
2010 ◽  
Vol 23 (1) ◽  
pp. no-no
Author(s):  
K. YOSHINAGA ◽  
M. RIKITAKE ◽  
T. KITO ◽  
Y. YAMAMOTO ◽  
H. EGUCHI ◽  
...  
Keyword(s):  
Ir Spectroscopy ◽  
Silica Gel ◽  
Hydroxyl Group ◽  
Surface Hydroxyl ◽  
Ft Ir ◽  
Ft Ir Spectroscopy
Sign in / Sign up

Export Citation Format

Share Document