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

Metal-free oxidation/C(sp3)-H functionalization of unactivated alkynes using pyridine-N-oxide as the external oxidant. | LitMetric

Metal-free oxidation/C(sp3)-H functionalization of unactivated alkynes using pyridine-N-oxide as the external oxidant.

Angew Chem Int Ed Engl

Hefei National Laboratory for Physical Sciences at the Microscale and Department of Chemistry, University of Science and Technology of China, Hefei, 230026, China.

Published: December 2012

Download full-text PDF

Source
http://dx.doi.org/10.1002/anie.201205062DOI Listing

Publication Analysis

Top Keywords

metal-free oxidation/csp3-h
4
oxidation/csp3-h functionalization
4
functionalization unactivated
4
unactivated alkynes
4
alkynes pyridine-n-oxide
4
pyridine-n-oxide external
4
external oxidant
4
metal-free
1
functionalization
1
unactivated
1

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!