Severity: Warning
Message: file_get_contents(https://...@gmail.com&api_key=61f08fa0b96a73de8c900d749fcb997acc09&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
A copper-catalyzed and air-mediated mild cross-dehydrogenative coupling of aryl thioureas and dialkyl H-phosphonates to produce thiophosphonates has been reported. Without addition of base or acid, air as an oxidant, the phosphorylation occurred smoothly to give the target products in moderate to excellent yields at room temperature. The protocol allows the direct formation of a sulfur-phosphorus bond, tolerates a series of functional groups, and shows potential synthetic value for the synthesis of a diversity of thiophosphonates.
Download full-text PDF |
Source |
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http://dx.doi.org/10.1021/acs.joc.8b02011 | DOI Listing |
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