Highly efficient synthesis of phosphorodithioates derived from 3′-thiothymidine by anhydro-ring opening of 2,3′-anhydro-5′-O-tritylthymidine with O,O-disubstituted phosphorodithioic acids

1998 ◽  
pp. 427-428 ◽  
Author(s):  
Wojciech Da¸bkowski ◽  
Izabela Tworowska ◽  
Wojciech Da¸bkowski ◽  
Maria Michalska
Keyword(s):  
Ring Opening ◽  
Efficient Synthesis ◽  
Highly Efficient

scholarly journals Highly efficient synthesis of C3-symmetric O-alkyl substituted triphenylenes and related Mannich derivatives

2018 ◽  
Vol 5 (16) ◽  
pp. 2458-2462 ◽  
Author(s):  
Giacomo Berton ◽  
Giuseppe Borsato ◽  
Roberta Zangrando ◽  
Andrea Gambaro ◽  
Fabrizio Fabris ◽  
...  
Keyword(s):  
Ring Opening ◽  
Efficient Synthesis ◽  
Highly Efficient ◽  
Selective Ring Opening

C3-Symmetric tris-benzyl-O-substituted hexahydroxytriphenylene (HHTP) was prepared through selective ring opening with DIBAL-H in 48% yield (38% from HHTP in a two-step synthesis).

A highly efficient metal-free protocol for the synthesis of linear polydicyclopentadiene

2021 ◽  
Author(s):  
Xuejin Yang ◽  
Laura M. Murphy ◽  
Farihah M. Haque ◽  
Scott M. Grayson ◽  
Andrew J. Boydston
Keyword(s):  
Ring Opening ◽  
Efficient Synthesis ◽  
Ring Opening Metathesis Polymerization ◽  
Free Ring ◽  
Metathesis Polymerization ◽  
Metal Free ◽  
Highly Efficient

We have developed a highly efficient synthesis of linear polydicyclopentadiene (pDCPD) via photoredox mediated metal-free ring-opening metathesis polymerization (MF-ROMP) and investigated the Tg–Mn dependence of linear pDCPD.

Highly efficient synthesis of β-nitrate ester carboxamides through the ring-opening of 2-oxazolines

2017 ◽  
Vol 19 (24) ◽  
pp. 5789-5793 ◽  
Author(s):  
Kai Qiao ◽  
Xin Yuan ◽  
Li Wan ◽  
Ming-Wei Zheng ◽  
Dong Zhang ◽  
...  
Keyword(s):  
Ring Opening ◽  
Efficient Synthesis ◽  
Nitrate Ester ◽  
Highly Efficient ◽  
Novel Method

A novel method for the synthesis of β-nitrate ester carboxamides using non-corrosivetert-butyl nitrite (TBN) as the nitro source and easily available oxygen as the oxidant has been developed.

scholarly journals Synthesis of enantiomerically pure N-(2,3-dihydroxypropyl)arylamides via oxidative esterification

2013 ◽  
Vol 9 ◽  
pp. 2129-2136 ◽  
Author(s):  
Akula Raghunadh ◽  
Satish S More ◽  
T Krishna Chaitanya ◽  
Yadla Sateesh Kumar ◽  
Suresh Babu Meruva ◽  
...  
Keyword(s):  
Ring Opening ◽  
Efficient Synthesis ◽  
Enantiomerically Pure ◽  
Step Process ◽  
Oxidative Esterification ◽  
Highly Efficient ◽  
Chiral Purity ◽  
High Yields ◽  
Nitrogen Heterocyclic

A highly efficient synthesis of enantiomerically pure (S) and (R)-isomers of N-(2,3-dihydroxypropyl)arylamides has been developed with good overall yields in a two step process. The key step involves the ring opening of the chiral epoxide with a nitrogen heterocyclic carbene (NHC) and further rearrangement to chiral N-(2,3-dihydroxypropyl)arylamides in high yields and enantioselectivity. During the reaction, no erosion in chiral purity was observed.

scholarly journals Application of aziridinium ring opening for preparation of optically active diamine and triamine analogues: highly efficient synthesis and evaluation of DTPA-based MRI contrast enhancement agents

RSC Advances ◽  
2015 ◽  
Vol 5 (115) ◽  
pp. 94571-94581 ◽  
Author(s):  
Xiang Sun ◽  
Yunwei Chen ◽  
Ningjie Wu ◽  
Chi Soo Kang ◽  
Hyun A. Song ◽  
...  
Keyword(s):  
Contrast Enhancement ◽  
Ring Opening ◽  
Optically Active ◽  
Efficient Synthesis ◽  
Mri Contrast ◽  
Diethylene Triamine ◽  
Highly Efficient ◽  
Diethylene Triamine Pentaacetic Acid ◽  
Nitrogen Nucleophiles ◽  
Aziridinium Ions

Ring opening of aziridinium ions with nitrogen nucleophiles was applied to highly efficient synthesis of optically active vicinal diamines and diethylene triamine pentaacetic acid (DTPA) analogues.

Highly efficient synthesis of methyl ethyl ketone oxime through ammoximation over Ti-MOR catalyst

2014 ◽  
Vol 34 (1) ◽  
pp. 243-250
Author(s):  
Jianghong DING ◽  
Le XU ◽  
Hao XU ◽  
Haihong WU ◽  
Yueming LIU ◽  
...  
Keyword(s):  
Methyl Ethyl Ketone ◽  
Methyl Ethyl ◽  
Efficient Synthesis ◽  
Highly Efficient

Advanced Heterocyclic Branched Semiconducting Units - Highly Efficient Synthesis and Physicochemical Characteristic

2013 ◽  
Vol 17 (3) ◽  
pp. 283-295 ◽  
Author(s):  
Jadwiga Soloducho ◽  
Joanna Cabaj ◽  
Kamila Olech ◽  
Przemyslaw Data ◽  
Mieczyslaw Lapkowski
Keyword(s):  
Physicochemical Characteristic ◽  
Efficient Synthesis ◽  
Highly Efficient
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