scholarly journals Cyclopolymerization XXIX. Radical Polymerizations of N-Methyl-N-(meth)allyl-2-(t-butoxycarbonyl)allylamines: Effect of a Bulky Ester Group on Cyclopolymerizability of 1,6-Dienes with Functional Groups of No Homopolymerization Tendencies

2000 ◽  
Vol 32 (11) ◽  
pp. 954-960
Author(s):  
Toshiyuki Kodaira ◽  
Masahiko Satoyama ◽  
Michio Urushisaki ◽  
Tamotsu Hashimoto
Keyword(s):  
Functional Groups ◽  
Ester Group ◽  
Radical Polymerizations

A Tandem Sulfonylation and Knoevenagel Condensation for the Preparation of Sulfocoumarin-3-carboxylates

Synthesis ◽  
2019 ◽  
Vol 51 (08) ◽  
pp. 1809-1818 ◽  
Author(s):  
Ziyang Dong ◽  
Yang Chen ◽  
Zhiheng Yang ◽  
Zhanhui Yang ◽  
Jiaxi Xu
Keyword(s):  
Functional Groups ◽  
Knoevenagel Condensation ◽  
Sulfonyl Chloride ◽  
Ester Group ◽  
Bioactive Molecules ◽  
One Pot ◽  
Structural Motifs ◽  
Phenolic Hydroxy

Sulfocoumarins are key structural motifs in several bioactive molecules. Herein, we describe a simple, one-pot procedure for the synthesis of structurally diverse sulfonocoumarin-3-carboxylates by heating 2-hydroxyaryl aldehydes with an active sulfonyl chloride in the presence of pyridine. The process tolerates numerous functional groups including alkoxy, alkyl, halogen, nitro, and even nucleophilic phenolic hydroxy. Additionally, reactions of 2-hydroxyaryl ketones and 2-methylaminoaryl aldehydes give 4-substituted sulfocoumarins and 1-aza-2-sulfocoumarins, respectively. A gram-scale synthesis and further derivatizations are also reported. The ester group is easily removed via ­Happer’s decarboxylation.

Efficient C(sp3)–H Bond Arylation of Tetrahydroisoquinolines with Knochel-Type Arylzinc Reagents under Oxidative Conditions

Synlett ◽  
2017 ◽  
Vol 28 (14) ◽  
pp. 1835-1839 ◽  
Author(s):  
Zhihua Peng ◽  
Zhi Yu ◽  
Dong-Huang Chen ◽  
Shuyuan Liang ◽  
Liwei Zhang ◽  
...  
Keyword(s):  
Functional Groups ◽  
Ester Group ◽  
Biologically Active Compounds ◽  
Biologically Active ◽  
Active Compounds ◽  
Wide Range

A novel C(sp3)–H bond arylation of tetrahydroisoquinoline (THIQ) derivatives with Knochel-type arylzinc reagents has been developed. In the presence of MgCl2, arylzinc reagents readily reacted with THIQ derivatives under oxidative conditions, affording a wide range of potentially biologically active compounds in good yields. Moreover, the developed method can tolerate a variety of sensitive functional groups such as an ester group.

The chemical constituents of Galbulimima species. VI. The structure of himandridine

1967 ◽  
Vol 20 (5) ◽  
pp. 981 ◽  
Author(s):  
LN Mander ◽  
E Ritchie ◽  
WC Taylor
Keyword(s):  
Functional Groups ◽  
Chemical Constituents ◽  
Ester Group

Himandridine, the major alkaloid of the ester group of Galbulimima alkaloids, was shown to have the hexacyclic structure (III) by systematic characterization of the functional groups and by rational degradation to the (+)-1-lutidyl-4-methylbenz[e]indan (XLI), the racemic modification of which was synthesized. ��� Himandridine and himbosine are the first members of a new alkaloid family.

Improving integration between functional groups: A case in organization change and implications for theory and practice

1971 ◽  
Author(s):  
Warren G. Bennis ◽  
Michael Beer ◽  
Gerald R. Pieters ◽  
Alan T. Hundert ◽  
Samuel H. Marcus ◽  
...  
Keyword(s):  
Functional Groups ◽  
Organization Change ◽  
Theory And Practice
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