Results 151 to 160 of about 3,016,957 (322)

Synthesis and biological activity of spiro(isocoumarin-piperidines) and reltaed compounds. I.

, 1981
Masatoshi Yamato, Kuniko Hashigaki, Masao Ikeda, H. OHTAKE, Kenjí Tasaka   +4 more
openalex   +2 more sources

An efficient in situ reduction and cyclization reaction for synthesis of spiro compound derivatives in Fe–H₂O–AcOH medium from nitro compounds [PDF]

, 2018
Hui Xu, Zhengbing Pan, Lei Dai, Kaimin Mao, Liangce Rong   +4 more
openalex   +1 more source

Heterocyclic Spiro Compounds. III. Synthesis of [2R*,11bR*]-9.10-Dimethoxy-1,3,4,6,7,11b-hexahydrobenzo[a]quinolizine-2-spiro-3'-pyrrolidines and [2R*,11bR*]-9,10-Dimethoxy-1,3,4,6,7,11b-hexahydrobenzo[a]quinolizine-2-spiro-3'-pyrrolidin-2'-ones

, 1989
Mónica Söllhuber, J. Carlos Menéndez
openalex   +1 more source

Theoretical study of the formation of a spiro-Sn-heterocyclic compound by cycloaddition reaction of Me₂C=Sn: and ethene [PDF]

, 2018
Xiaojun Tan, Xiuhui Lu
openalex   +1 more source

Human interparietal bones: Examination of existing classification schemes and development of a graphic library depicting variations

The Anatomical Record, EarlyView.
Examples from the graphic library depicting morphologies of interparietal bones, ossicles at lambda, mendosal sutures, and intrasutural ossicles. Abstract Due to its complex ossification during development, the superior region of the human occipital bone is a frequent site of supernumerary bones known as interparietal bones.
Melissa D. Clarkson, Rhian R. Dunn, Joseph T. Hefner, Holly A. Long, Micayla C. Spiros   +4 more
wiley   +1 more source

Asymmetric Synthesis of Propargylic and Allenic Silanes, Germanes, and Stannanes

Chemistry – An Asian Journal, EarlyView.
Organotetrel compounds are important reagents with broad applications in chemical industries and natural product synthesis. This review provides a summary of strategies for the synthesis of propargylic and allenic organotetrels in their enantioenriched forms.
Hai Chang, Ruihan Wang, Yi‐Ming Wang
wiley   +1 more source

The Formation of Spiro-bridged Dimers of Cyclooctane-1,2-dicarbonyl Compounds via Domino Aldol-Cycloalkylation

, 2002
Michael Oelgemöller, Keijiro Fukui, Dušan Hesek, Fumiko Aoki, Makiko Niki, Yoshihisa Inoue   +5 more
openalex   +1 more source

Sulfur‐Mediated Ring‐Opening Cyclization of Spirocyclopropanes for the Construction of Benzo[b]thiophene Skeleton

Chemistry – An Asian Journal, EarlyView.
Regioselective ring‐opening cyclization of spirocyclopropanes with NaSH proceeded smoothly, and subsequent addition of an acid afforded tetrahydrobenzo[b]thiophen‐4‐ones that could be converted into the 4‐hydroxybenzo[b]thiophenes. This protocol provides an alternative synthetic method to access benzo[b]thiophenes without using multisubstituted ...
Hisanori Nambu, Yuki Seto, Yuta Onuki, Koga Yamazaki, Keisuke Tomohara, Takayuki Yakura   +5 more
wiley   +1 more source

Exploitation of the Ugi 5-Center-4-Component Reaction (U-5C-4CR) for the Generation of Diverse Libraries of Polycyclic (Spiro)Compounds. [PDF]

Front Chem, 2018
Moni L, De Moliner F, Garbarino S, Saupe J, Mang C, Basso A.   +5 more
europepmc   +1 more source

The Effect of Regioisomerism on the TADF Properties of Organic Dyes

ChemistryEurope, EarlyView.
The properties of TADF emitters are highly dependent on the chosen electron donor and acceptor, as well as the π‐system that links them together. Herein, we show that regioisomerism affects the physical properties of spirobifluorene‐based systems in solution, thin films and crystals.
Tim Silies, Silvia Tombolato, Debbie Stappers, Nikos L. Doltsinis, Constantin G. Daniliuc, Fabio Rizzo   +5 more
wiley   +1 more source