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: 1034
Function: getPubMedXML

File: /var/www/html/application/helpers/my_audit_helper.php
Line: 3152
Function: GetPubMedArticleOutput_2016

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

Synthesis of (macro)heterocycles by consecutive/repetitive isocyanide-based multicomponent reactions. | LitMetric

Synthesis of (macro)heterocycles by consecutive/repetitive isocyanide-based multicomponent reactions.

Beilstein J Org Chem

Universidade de Brasília, Instituto de Química, Laboratório de Química Metodológica e Orgânica Sintética (LaQMOS), 70910-970 Brasília-DF, Brazil.

Published: April 2019

Isocyanide-based multicomponent reactions are a versatile tool in the synthesis of heterocycles. This review describes recently developed approaches based on the combination of consecutive or repetitive isocyanide-based multicomponent reactions for the synthesis of structurally diverse heterocycles. These strategies have also allowed the synthesis of a plethora of macroheterocycles in a reduced number of steps.

Download full-text PDF

Source
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC6541343PMC
http://dx.doi.org/10.3762/bjoc.15.88DOI Listing

Publication Analysis

Top Keywords

isocyanide-based multicomponent
12
multicomponent reactions
12
synthesis
4
synthesis macroheterocycles
4
macroheterocycles consecutive/repetitive
4
consecutive/repetitive isocyanide-based
4
reactions isocyanide-based
4
reactions versatile
4
versatile tool
4
tool synthesis
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!