Skip to main page content
U.S. flag

An official website of the United States government

Dot gov

The .gov means it’s official.
Federal government websites often end in .gov or .mil. Before sharing sensitive information, make sure you’re on a federal government site.

Https

The site is secure.
The https:// ensures that you are connecting to the official website and that any information you provide is encrypted and transmitted securely.

Access keys NCBI Homepage MyNCBI Homepage Main Content Main Navigation

Search Page

Filters

My Custom Filters

Results by year

Table representation of search results timeline featuring number of search results per year.

Year Number of Results
1969 1
1970 1
1971 1
1975 4
1976 8
1977 7
1978 4
1979 2
1980 8
1981 8
1982 9
1983 17
1984 19
1985 17
1986 36
1987 35
1988 30
1989 43
1990 54
1991 63
1992 67
1993 83
1994 77
1995 105
1996 113
1997 138
1998 123
1999 181
2000 277
2001 300
2002 335
2003 375
2004 423
2005 525
2006 628
2007 596
2008 662
2009 649
2010 677
2011 760
2012 735
2013 711
2014 749
2015 769
2016 777
2017 755
2018 872
2019 878
2020 872
2021 875
2022 908
2023 869
2024 902
2025 841

Publication date

Text availability

Article attribute

Article type

Additional filters

Article Language

Species

Sex

Age

Other

Search Results

17,749 results

Results by year

Filters applied: . Clear all
Page 1
Showing results for chiral n
Search for Chilal N instead (1 results)
Planar-Chiral Ferrocene-Based N-Heterocyclic Carbene Ligands.
Yoshida K, Yasue R. Yoshida K, et al. Chemistry. 2018 Dec 12;24(70):18575-18586. doi: 10.1002/chem.201803903. Epub 2018 Nov 28. Chemistry. 2018. PMID: 30277615 Review.
However, chiral NHC ligands still require further design enhancement to realize far more exciting synthetic applications. This review documents advances in chiral NHC ligands, focusing on planar-chiral ferrocene-based NHCs. As the basic shape of most classes …
However, chiral NHC ligands still require further design enhancement to realize far more exciting synthetic applications. This review …
The Chiral Twist-Bend Nematic Phase (N*(TB) ).
Walker R, Pociecha D, Storey JMD, Gorecka E, Imrie CT. Walker R, et al. Chemistry. 2019 Oct 17;25(58):13329-13335. doi: 10.1002/chem.201903014. Epub 2019 Sep 5. Chemistry. 2019. PMID: 31322779
The twist-bend nematic, N(TB) , phase has been observed for chiral materials in which chirality is introduced through a branched 2-methylbutyl terminal tail. ...The N*-N*(TB) transition temperatures for the chiral materials are higher tha …
The twist-bend nematic, N(TB) , phase has been observed for chiral materials in which chirality is introduced through a …
Axially chiral N-alkyl-N-cinnamoyl amide type P,olefin ligands for Pd-catalyzed reactions.
Mino T, Takaya K, Koki K, Akimoto N, Yoshida Y, Kasashima Y, Sakamoto M. Mino T, et al. Org Biomol Chem. 2023 Mar 29;21(13):2775-2778. doi: 10.1039/d3ob00224a. Org Biomol Chem. 2023. PMID: 36920143
We synthesized N-alkyl-N-cinnamoyl amide type phosphine-olefin compounds 1 and found axial chirality in a C(aryl)-N(amide) bond in compounds 1 by HPLC analysis using a chiral stationary phase column. We successfully obtained enantiomeric isomers …
We synthesized N-alkyl-N-cinnamoyl amide type phosphine-olefin compounds 1 and found axial chirality in a C(aryl)-N …
Synthesis of C-N Axially Chiral N-Arylbenzo[g]indoles via a Central-to-Axial Chirality Conversion Strategy.
Sun Y, Sun L, Zhang S, Zhang Z, Wang T. Sun Y, et al. Org Lett. 2024 Jun 7;26(22):4773-4778. doi: 10.1021/acs.orglett.4c01576. Epub 2024 May 23. Org Lett. 2024. PMID: 38780223
Gold-catalyzed cascade cyclization of diynes for the synthesis of previously unexplored C-N axially chiral N-arylbenzo[g]indoles was described. The transformation was achieved via a central-to-axial chirality conversion strategy. The chiral conv …
Gold-catalyzed cascade cyclization of diynes for the synthesis of previously unexplored C-N axially chiral N-arylbenzo[ …
Cucurbituril: chiral applications.
Mandadapu V, Day AI, Ghanem A. Mandadapu V, et al. Chirality. 2014 Nov;26(11):712-23. doi: 10.1002/chir.22363. Epub 2014 Aug 28. Chirality. 2014. PMID: 25169840 Review.
This review brings together the past and current methods for synthesizing the classical cucurbit[n]uril (Q[n]), structural variants, and derivatives. Here we refer to the first family of Q[n] as " classical," where the cavity is spheroidal and carry no substi …
This review brings together the past and current methods for synthesizing the classical cucurbit[n]uril (Q[n]), structural var …
Synthesis of N-N Axially Chiral Pyrrolyl-oxoisoindolin via Isothiourea-Catalyzed Acylative Dynamic Kinetic Resolution.
Wang TT, Cao J, Li X. Wang TT, et al. Org Lett. 2024 Jul 26;26(29):6179-6184. doi: 10.1021/acs.orglett.4c02031. Epub 2024 Jul 18. Org Lett. 2024. PMID: 39023300
The development of methods for the asymmetric synthesis of N-N axial chirality remains elusive and challenging. Here, we disclose a method for the construction of N-N axially chiral pyrrolyl-oxoisoindolins along with central chirality …
The development of methods for the asymmetric synthesis of N-N axial chirality remains elusive and challenging. Here, w …
Organocatalytic Atroposelective Synthesis of N-N Axially Chiral Indoles and Pyrroles by De Novo Ring Formation.
Chen KW, Chen ZH, Yang S, Wu SF, Zhang YC, Shi F. Chen KW, et al. Angew Chem Int Ed Engl. 2022 Apr 19;61(17):e202116829. doi: 10.1002/anie.202116829. Epub 2022 Feb 23. Angew Chem Int Ed Engl. 2022. PMID: 35080808
The first highly atroposelective construction of N-N axially chiral indole scaffolds was established via a new strategy of de novo ring formation. ...In addition, this strategy is applicable for the atroposelective synthesis of N-N axially ch …
The first highly atroposelective construction of N-N axially chiral indole scaffolds was established via a new strategy …
Chiral N-Alkylfluorenyl-Substituted N-Heterocyclic Carbenes in the Gold(I)-Catalyzed Enantioselective Cycloisomerization of 1,6-Enynes.
Heinrich R, Marie-Rose G, Gourlaouen C, Pale P, Brenner E, Blanc A. Heinrich R, et al. Chemistry. 2025 Apr 1;31(19):e202404446. doi: 10.1002/chem.202404446. Epub 2025 Feb 14. Chemistry. 2025. PMID: 39910990
A series of chiral (A)*Flu-NHC-gold(I) complexes, where (A)*Flu-NHC is an N-heterocyclic carbene (imidazolin-2-ylidene or benzimidazolin-2-ylidene) bearing a chiral 9-alkyl-9-fluorenyl N-substituent and a 2,6-diisopropylphenyl or benzyl N'-subst …
A series of chiral (A)*Flu-NHC-gold(I) complexes, where (A)*Flu-NHC is an N-heterocyclic carbene (imidazolin-2-ylidene or benz …
Configurationally Chiral SuFEx-Based Polymers.
Liang DD, Pujari SP, Subramaniam M, Besten M, Zuilhof H. Liang DD, et al. Angew Chem Int Ed Engl. 2022 Feb 14;61(8):e202116158. doi: 10.1002/anie.202116158. Epub 2022 Jan 11. Angew Chem Int Ed Engl. 2022. PMID: 34919320 Free PMC article.
The enantiospecific sulfur-fluorine exchange (SuFEx) reaction of chiral di-sulfonimidoyl fluorides (di-SFs) with diphenols, was used to produce high-molecular-weight chiral polymers with configurational backbone chirality. ...This novel route towards configur …
The enantiospecific sulfur-fluorine exchange (SuFEx) reaction of chiral di-sulfonimidoyl fluorides (di-SFs) with diphenols, was used …
Organocatalytic diastereo- and atroposelective construction of N-N axially chiral pyrroles and indoles.
Wang SJ, Wang X, Xin X, Zhang S, Yang H, Wong MW, Lu S. Wang SJ, et al. Nat Commun. 2024 Jan 15;15(1):518. doi: 10.1038/s41467-024-44743-z. Nat Commun. 2024. PMID: 38225235 Free PMC article.
The construction of N-N axially chiral motifs is an important research topic, owing to their wide occurrence in natural products, pharmaceuticals and chiral ligands. ...Using our method, we are able to synthesize structurally diverse N-N …
The construction of N-N axially chiral motifs is an important research topic, owing to their wide occurrence in natural …
17,749 results
You have reached the last available page of results. Please see the User Guide for more information.