ChemInform Abstract: Synthesis of a New Chiral Phase-Transfer Catalyst: Chemical Activity in Alkylation Reactions.

ChemInform ◽  
1990 ◽  
Vol 21 (33) ◽  
Author(s):  
V. L. K. VALLI ◽  
G. V. M. SARMA ◽  
B. M. CHOUDARY
Keyword(s):  
Phase Transfer ◽  
Chemical Activity ◽  
Phase Transfer Catalyst ◽  
Chiral Phase ◽  
Alkylation Reactions

scholarly journals Synthesis of cationic dibenzosemibullvalene-based phase-transfer catalysts by di-π-methane rearrangements of pyrrolinium-annelated dibenzobarrelene derivatives

2011 ◽  
Vol 7 ◽  
pp. 119-126 ◽  
Author(s):  
Heiko Ihmels ◽  
Jia Luo
Keyword(s):  
Solid State ◽  
Nitrogen Atom ◽  
Phase Transfer ◽  
Phase Transfer Catalyst ◽  
Covalent Attachment ◽  
Phase Transfer Catalysts ◽  
Counter Ion ◽  
Alkylation Reactions

Dibenzobarrelene derivatives, that are annelated with a pyrrolinium unit [N,N-dialkyl-3,4-(9',10'-dihydro-9',10'-anthraceno-3-pyrrolinium) derivatives], undergo a photo-induced di-π-methane rearrangement upon triplet sensitization to give the corresponding cationic dibenzosemibullvalene derivatives [N,N-dialkyl-3,4-{8c,8e-(4b,8b-dihydrodibenzo[a,f]cyclopropa[cd]pentaleno)}pyrrolidinium derivatives]. Whereas the covalent attachment of a benzophenone functionality to the pyrrolinium nitrogen atom did not result in an internal triplet sensitization, the introduction of a benzophenone unit as part of the counter ion enables the di-π-methane rearrangement of the dibenzobarrelene derivative in the solid-state. Preliminary experiments indicate that a cationic pyrrolidinium-annelated dibenzosemibullvalene may act as phase-transfer catalyst in alkylation reactions.

scholarly journals Pd-Catalyzed Asymmetric Allylic Alkylation of Glycine Imino Ester Using a Chiral Phase-Transfer Catalyst.

ChemInform ◽  
2003 ◽  
Vol 34 (13) ◽  
Author(s):  
Masayoshi Nakoji ◽  
Takatoshi Kanayama ◽  
Tomotaka Okino ◽  
Yoshiji Takemoto
Keyword(s):  
Phase Transfer ◽  
Phase Transfer Catalyst ◽  
Allylic Alkylation ◽  
Asymmetric Allylic Alkylation ◽  
Chiral Phase

Enantioselective alkylation using a new C3 symmetric amine-based chiral phase-transfer catalyst

2003 ◽  
Vol 44 (21) ◽  
pp. 4073-4075 ◽  
Author(s):  
Nobuyuki Mase ◽  
Takahiro Ohno ◽  
Naoki Hoshikawa ◽  
Kazuhiro Ohishi ◽  
Hironao Morimoto ◽  
...  
Keyword(s):  
Phase Transfer ◽  
Phase Transfer Catalyst ◽  
Chiral Phase ◽  
Enantioselective Alkylation

Sulfenylation of β-keto sulfoxides. III. Diastereoselectivity induced by a chiral phase transfer catalyst

Tetrahedron ◽  
1999 ◽  
Vol 55 (41) ◽  
pp. 12023-12030 ◽  
Author(s):  
Blanka Wladislaw ◽  
Liliana Marzorati ◽  
Francisco C. Biaggio ◽  
Reinaldo R. Vargas ◽  
Marcelo B. Bjorklund ◽  
...  
Keyword(s):  
Phase Transfer ◽  
Phase Transfer Catalyst ◽  
Chiral Phase
Sign in / Sign up

Export Citation Format

Share Document