Simple preparation of some reusable and efficient polymer-supported tungsten carbonyl catalysts and clean epoxidation of cis-cyclooctene in the presence of H2O2

2006 ◽  
Vol 255 (1-2) ◽  
pp. 249-253 ◽  
Author(s):  
Shahram Tangestaninejad ◽  
Mohammad Hossein Habibi ◽  
Valiollah Mirkhani ◽  
Majid Moghadam ◽  
Gholamhossein Grivani
Keyword(s):  
Simple Preparation ◽  
Tungsten Carbonyl ◽  
Polymer Supported

Simple Preparation of Polymer Supported IBX Esters and Amides and Their Oxidative Properties.

ChemInform ◽  
2004 ◽  
Vol 35 (14) ◽  
Author(s):  
Woo-Jae Chung ◽  
Duk-Ki Kim ◽  
Yoon-Sik Lee
Keyword(s):  
Simple Preparation ◽  
Polymer Supported

Simple preparation of polymer supported IBX esters and amides and their oxidative properties

2003 ◽  
Vol 44 (52) ◽  
pp. 9251-9254 ◽  
Author(s):  
Woo-Jae Chung ◽  
Duk-Ki Kim ◽  
Yoon-Sik Lee
Keyword(s):  
Simple Preparation ◽  
Polymer Supported

Scanning electron microscopy of human iliac bone by a simple preparation method

1990 ◽  
Vol 48 (3) ◽  
pp. 226-227
Author(s):  
Toshihiko Takita ◽  
Tomonori Naguro ◽  
Toshio Kameie ◽  
Akihiro Iino ◽  
Kichizo Yamamoto
Keyword(s):  
Electron Microscopy ◽  
Scanning Electron Microscopy ◽  
Preparation Method ◽  
Specimen Preparation ◽  
Real Surface ◽  
Public Attention ◽  
Preparation Methods ◽  
The Real ◽  
Simple Preparation ◽  
Scanning Electron

Recently with the increase in advanced age population, the osteoporosis becomes the object of public attention in the field of orthopedics. The surface topography of the bone by scanning electron microscopy (SEM) is one of the most useful means to study the bone metabolism, that is considered to make clear the mechanism of the osteoporosis. Until today many specimen preparation methods for SEM have been reported. They are roughly classified into two; the anorganic preparation and the simple preparation. The former is suitable for observing mineralization, but has the demerit that the real surface of the bone can not be observed and, moreover, the samples prepared by this method are extremely fragile especially in the case of osteoporosis. On the other hand, the latter has the merit that the real information of the bone surface can be obtained, though it is difficult to recognize the functional situation of the bone.

Recent Application of Polystyrene-supported Triphenylphosphine in Solid-Phase Organic Synthesis

2019 ◽  
Vol 23 (6) ◽  
pp. 643-678
Author(s):  
Lalthazuala Rokhum ◽  
Ghanashyam Bez
Keyword(s):  
Organic Synthesis ◽  
Combinatorial Chemistry ◽  
Solid Phase ◽  
Recent Application ◽  
Organic Transformations ◽  
Solid Phase Organic Synthesis ◽  
Wide Range ◽  
Fast Development ◽  
Polymer Supported

Recent years have witnessed a fast development of solid phase synthetic pathways, a variety of solid-supported reagent and its applications in diverse synthetic strategies and pharmaceutical applicability’s. Polymer-supported triphenylphosphine is getting a lot of applications owing to the speed and simplicity in the process. Furthermore, ease of recyclability and reuse of polymer-supported triphenylphosphine added its advantages. This review covers a wide range of useful organic transformations which are accomplished using cross-linked polystyrene-supported triphenylphosphine with the aim of giving renewed interest in the field of organic and medicinal-combinatorial chemistry.

An Efficient Synthesis of 2-Substituted Quinazolin-4(3H)-ones by Using Recyclable Wang Resin Supported Sulfonic Acid Catalyst

2020 ◽  
Vol 17 ◽  
Author(s):  
Kalyani K. ◽  
Srinivasa Reddy Kallam
Keyword(s):  
Sulfonic Acid ◽  
Functional Group ◽  
Acid Catalyst ◽  
Sulphonic Acid ◽  
Isatoic Anhydride ◽  
Efficient Synthesis ◽  
Wang Resin ◽  
Polymer Supported ◽  
High Yields

Abstract:: An efficient synthesis of 2-substituted Quinazolin-4(3H)-ones has been developed from isatoic anhydride with various amidoximes by using recyclable polymer supported sulphonic acid catalyst. Excellent functional group compatibil-ity and high yields are the important features of this protocol.

Simple Preparation of Methyl 4-Chloromethyl- and Methyl 5-Chloromethyl-2-thiophenecarboxylate

1992 ◽  
Vol 57 (7) ◽  
pp. 1483-1486 ◽  
Author(s):  
Václav Kozmík ◽  
Jaroslav Paleček
Keyword(s):  
Selective Reduction ◽  
Sulfuryl Chloride ◽  
Simple Preparation

Selective reduction of a mixture of methyl 4-chloromethyl-2-thiophenecarboxylate (I) and the 5-chloromethyl isomer II, prepared by chloromethylation of methyl 2-thiophenecarboxylate (III), gave pure 4-chloromethyl derivative I and 5-methyl-2-thiophenecarboxylate (V) which on treatment with sulfuryl chloride was converted into the 5-chloromethyl isomer II.

ChemInform Abstract: A SIMPLE PREPARATION OF O-PHOSPHO-L-TYROSINE

1983 ◽  
Vol 14 (21) ◽  
Author(s):  
P. F. ALEWOOD ◽  
R. B. JOHNS ◽  
R. M. VALERIO ◽  
B. E. KEMP
Keyword(s):  
Simple Preparation
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