Nanocrystalline TiO2 as an efficient and reusable catalyst for the chemoselective trimethylsilylation of primary and secondary alcohols and phenols

2011 ◽  
Author(s):  
Farhad Shirini ◽  
Meysam Alipour Khoshdel ◽  
Masoumeh Abedini ◽  
Seyyed Vahid Atghia
Keyword(s):  
Reusable Catalyst ◽  
Secondary Alcohols ◽  
Nanocrystalline Tio2

One-pot three-component synthesis of 3-(α-aminobenzyl)-4-hydroxycoumarin derivatives using nanocrystalline TiO2 as reusable catalyst

2015 ◽  
Vol 51 (1) ◽  
pp. 69-73 ◽  
Author(s):  
J. N. Sangshetti ◽  
F. A. K. Khan ◽  
C. S. Kute ◽  
Z. Zaheer ◽  
R. Z. Ahmed
Keyword(s):  
Reusable Catalyst ◽  
Nanocrystalline Tio2 ◽  
One Pot

The synthesis of pyrroles via acceptorless dehydrogenative condensation of secondary alcohols and 1,2-amino alcohols mediated by a robust and reusable catalyst based on nanometer-sized iridium particles

2014 ◽  
Vol 4 (12) ◽  
pp. 4188-4192 ◽  
Author(s):  
Daniel Forberg ◽  
Johannes Obenauf ◽  
Martin Friedrich ◽  
Sven-Martin Hühne ◽  
Werner Mader ◽  
...  
Keyword(s):  
Amino Alcohols ◽  
Reusable Catalyst ◽  
Secondary Alcohols

H3PW12O40 — A selective, environmentally benign, and reusable catalyst for the preparation of methoxymethyl and ethoxymethyl ethers and their deprotections under mild conditions

2008 ◽  
Vol 86 (8) ◽  
pp. 831-840 ◽  
Author(s):  
Iraj Mohammadpoor-Baltork ◽  
Majid Moghadam ◽  
Shahram Tangestaninejad ◽  
Valiollah Mirkhani ◽  
Arsalan Mirjafari
Keyword(s):  
Reaction Times ◽  
Environmentally Benign ◽  
Reusable Catalyst ◽  
Secondary Alcohols ◽  
Selective Protection ◽  
Trimethylsilyl Ethers ◽  
Solvent Free Conditions ◽  
Benzyl Ethers ◽  
High Yields ◽  
Work Up

Different types of primary and secondary alcohols were efficiently transformed to their corresponding methoxymethyl (MOM) and ethoxymethyl (EOM) ethers in the presence of catalytic amounts of H3PW12O40 at room temperature under solvent-free conditions. Selective protection of primary and secondary alcohols in the presence of phenols and tertiary alcohols was achieved by this method. Deprotection of these ethers to their parent alcohols was also performed using this catalyst in ethanol under reflux conditions. We have also found that primary and secondary MOM- and EOM-ethers are selectively deprotected in the presence of phenolic and tertiary ones, methyl and benzyl ethers, esters, and trimethylsilyl ethers by this catalyst. The notable advantages of this protocol are high yields, short reaction times, easy work-up, non-toxicity, easy availability and handling, eco-friendly, and reusability of the catalyst.Key words: methoxymethylation, ethoxymethylation, protection, deprotection, heteropoly acid.

ChemInform Abstract: Nanocrystalline TiO2as an Efficient and Reusable Catalyst for the Chemoselective Trimethylsilylation of Primary and Secondary Alcohols and Phenols.

ChemInform ◽  
2011 ◽  
Vol 43 (4) ◽  
pp. no-no
Author(s):  
Farhad Shirini ◽  
Meysam Alipour Khoshdel ◽  
Masoumeh Abedini ◽  
Seyyed Vahid Atghia
Keyword(s):  
Reusable Catalyst ◽  
Secondary Alcohols

Speeding up heterogeneous catalysis with an improved highly reusable catalyst for the preparation of enantioenriched secondary alcohols

2017 ◽  
Vol 113 ◽  
pp. 23-30 ◽  
Author(s):  
Esther M. Sánchez-Carnerero ◽  
Rafael Sandoval-Torrientes ◽  
Javier Urieta-Mora ◽  
Florencio Moreno ◽  
Beatriz L. Maroto ◽  
...  
Keyword(s):  
Heterogeneous Catalysis ◽  
Reusable Catalyst ◽  
Secondary Alcohols

STRUCTURAL, OPTICAL PROPERTIES AND PHOTOCATALYTIC ACTIVITY OF NANOCRYSTALLINE TiO2 THIN FILMS DEPOSITED BY SOL-GEL SPIN COATING

2019 ◽  
Vol 7 (1) ◽  
pp. 28
Author(s):  
KOMARAIAH DURGAM ◽  
RADHA EPPA ◽  
REDDY M. V. RAMANA ◽  
KUMAR J. SIVA ◽  
R. SAYANNA ◽  
...  
Keyword(s):  
Thin Films ◽  
Optical Properties ◽  
Photocatalytic Activity ◽  
Spin Coating ◽  
Sol Gel ◽  
Tio2 Thin Films ◽  
Nanocrystalline Tio2
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