Results 181 to 190 of about 1,971 (208)

Dispiro(fluorene-9,4'-[1,3]dithiolane-5',9''-fluorene)

Acta Crystallographica Section C Crystal Structure Communications, 1995
The crystal structure of dispiro(fluorene-9,4'-[1,3]dithiolane-5',9-fluorene), C 27 H 18 S 2 , is reported. The C4-C5 bond connecting the two fluorenyl groups is 1.580 (4) A which is slightly longer than the C-C bond lengths [1.36-1.49 A] in other 1,3-dithiolanes.
R. P. Leino, H. J. G. Luttikhedde, J. H. Nasman, M. Ahlgrén, T. Pakkanen   +4 more
openaire   +1 more source

Synthesis, Structures, and Optical Properties of Heteroarene-Fused Dispiro Compounds

The Journal of Organic Chemistry, 2010
Novel heteroarene-fused dispiro compounds, dispiro[9H-fluorene-9,5'(6'H)-diindeno[1,2-b:2',1'-d]furan-6',9''-[9H]fluorene] (dsp-DIF), dispiro[9H-fluorene-9,5'(6'H)-diindeno[1,2-b:2',1'-d]thiophene-6',9''-[9H]fluorene] (dsp-DIT), and 11-phenyldispiro[9H-fluorene-9,5'(6'H)-diindeno[1,2-b:2',1'-d]pyrrole-6',9''-[9H]fluorene] (dsp-DIP-Ph) have been ...
Kowada, Toshiyuki, Kuwabara, Toshihisa, Ohe, Kouichi   +2 more
openaire   +2 more sources

A High Regioselective Synthesis of Novel Dispiro[oxindole‐cyclohexanone]pyrrolidines.

ChemInform, 2003
AbstractFor Abstract see ChemInform Abstract in Full Text.
Ambrose Amal Raj, Raghavachary Raghunathan   +1 more
openaire   +1 more source

Dispiro[2,2,2,2]deca-4,9-diene: preparation and reactions

Journal of the Chemical Society, Chemical Communications, 1972
Dispiro[2,2,2,2]deca-4,9-diene(4)is prepared and its chemical and physical properties are examined; the reaction with dimethyl trans,trans-muconate affords the cycloadduct (5).
T. Tsuji, S. Nishida, H. Tsubomura
openaire   +1 more source

Synthesis of dispiro hetero analogs of pyrrolizidine alkaloids

Russian Journal of Organic Chemistry, 2012
Reactions of spiro heterocyclic enamines with 1H-pyrrole-2,3-diones, including those fused at the N–C bond to nitrogen-containing heterocycles, were not studied. We have found that 3-aroyl-1H-pyrrolo[2,1-c][1,4]benzoxazine-1,2,4-triones Ia and Ib react with an equimolar amount of 2′,5′,5′-trimethyl-4′,5′-dihydro-4H-spiro[naphthalene-1,3′-pyrrol]-4-one (
V. V. Konovalova, Yu. V. Shklyaev, A. N. Maslivets   +2 more
openaire   +1 more source

Dispiro(5.1.5.1)tetradecane¹

Journal of the American Chemical Society, 1953
H. M. Walborsky, E. R. Buchman
openaire   +1 more source

A Dispiro‐Type Fluorene‐Indenofluorene‐Centered Hole Transporting Material for Efficient Planar Perovskite Solar Cells

Solar Rrl, 2018
Xuan Liu, Xin Guo, Can Li
exaly  

Regioselective synthesis of dispiro[1H-indene-2,3′-pyrrolidine-2′,3″-[3H]indole]-1,2″(1″H)-diones of potential anti-tumor properties

European Journal of Medicinal Chemistry, 2009
Adel S Girgis
exaly  

High isotropic dispiro structure hole transporting materials for planar perovskite solar cells

Journal of Energy Chemistry, 2019
Xichuan Yang, Licheng Sun, Haoxin Wang
exaly  

Synthesis and cytotoxicity of oxindoles dispiro derivatives with thiohydantoin and adamantane fragments

Phosphorus, Sulfur and Silicon and the Related Elements, 2020
Nikolai V Zyk, Alexander G Majouga
exaly