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

Cascade dearomatization of N-substituted tryptophols via Lewis acid-catalyzed Michael reactions. | LitMetric

Cascade dearomatization of N-substituted tryptophols via Lewis acid-catalyzed Michael reactions.

Org Biomol Chem

State Key Laboratory of Organometallic Chemistry, Shanghai Institute of Organic Chemistry, Chinese Academy of Sciences, Shanghai, PR China.

Published: September 2012

AI Article Synopsis

  • A new method for transforming N-substituted tryptophols using Lewis acid catalysis was developed, involving a cascade dearomatization process.
  • This method utilizes a Michael addition reaction, leading to the creation of furoindoline derivatives.
  • The approach is versatile, successfully producing compounds with a quaternary carbon center in good yields.

Article Abstract

Lewis acid-catalyzed cascade dearomatization of N-substituted tryptophols via Michael addition reaction was developed. The generality of the method has been demonstrated by the synthesis of versatile furoindoline derivatives with a quaternary carbon center in good yields.

Download full-text PDF

Source
http://dx.doi.org/10.1039/c2ob26139aDOI Listing

Publication Analysis

Top Keywords

cascade dearomatization
8
dearomatization n-substituted
8
n-substituted tryptophols
8
lewis acid-catalyzed
8
tryptophols lewis
4
acid-catalyzed michael
4
michael reactions
4
reactions lewis
4
acid-catalyzed cascade
4
tryptophols michael
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!