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

Iterative synthesis of acenes via homo-elongation. | LitMetric
Browse Categories

Iterative synthesis of acenes via homo-elongation.

Chih-Hsiu Lin Ke-Han Lin Bikash Pal Li-Der Tsou

Chem Commun (Camb)

Institute of Chemistry, Academia Sinica, 128 Academia Road, Nankang, Taipei, Taiwan.

Published: February 2009

Starting from aromatic ortho-dialdehydes, we devised a homo-elongation protocol that combines a Wittig olefination and subsequent intramolecular Knoevenagel condensation to produce acene diesters and dinitriles.

Download full-text PDF

 Source
http://dx.doi.org/10.1039/b814840fDOI Listing

Publication Analysis

Top Keywords

iterative synthesis
4
synthesis acenes
4
acenes homo-elongation
4
homo-elongation starting
4
starting aromatic
4
aromatic ortho-dialdehydes
4
ortho-dialdehydes devised
4
devised homo-elongation
4
homo-elongation protocol
4
protocol combines
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!

Privacy Policy Site Map

© LitMetric 2025. All rights reserved.