A PHP Error was encountered

Severity: Warning

Message: file_get_contents(https://...@pubfacts.com&api_key=b8daa3ad693db53b1410957c26c9a51b4908&a=1): Failed to open stream: HTTP request failed! HTTP/1.1 429 Too Many Requests

Filename: helpers/my_audit_helper.php

Line Number: 176

Backtrace:

File: /var/www/html/application/helpers/my_audit_helper.php
Line: 176
Function: file_get_contents

File: /var/www/html/application/helpers/my_audit_helper.php
Line: 250
Function: simplexml_load_file_from_url

File: /var/www/html/application/helpers/my_audit_helper.php
Line: 3122
Function: getPubMedXML

File: /var/www/html/application/controllers/Detail.php
Line: 575
Function: pubMedSearch_Global

File: /var/www/html/application/controllers/Detail.php
Line: 489
Function: pubMedGetRelatedKeyword

File: /var/www/html/index.php
Line: 316
Function: require_once

Thiourea-Mediated Stereospecific Deoxygenation of Cyanoepoxides to Access Highly Diastereopure Alkenyl Nitriles. | LitMetric

Thiourea-Mediated Stereospecific Deoxygenation of Cyanoepoxides to Access Highly Diastereopure Alkenyl Nitriles.

J Org Chem

Department of Organic Chemistry, College of Chemistry, Beijing University of Chemical Technology, Beijing 100029, P.R. China.

Published: February 2024

A practical and efficient protocol for synthesis of >99% diastereopure - and -alkenyl nitriles is developed, through tetramethylthiourea-mediated stereospecific deoxygenation of respective - and -cyanoepoxides in ethanol. The desired products are obtained in excellent yields.

Download full-text PDF

Source
http://dx.doi.org/10.1021/acs.joc.3c02869DOI Listing

Publication Analysis

Top Keywords

stereospecific deoxygenation
8
thiourea-mediated stereospecific
4
deoxygenation cyanoepoxides
4
cyanoepoxides access
4
access highly
4
highly diastereopure
4
diastereopure alkenyl
4
alkenyl nitriles
4
nitriles practical
4
practical efficient
4

Similar Publications

Want AI Summaries of new PubMed Abstracts delivered to your In-box?

Enter search terms and have AI summaries delivered each week - change queries or unsubscribe any time!