These tools will no longer be maintained as of December 31, 2024. Archived website can be found here. PubMed4Hh GitHub repository can be found here. Contact NLM Customer Service if you have questions.
3. Cyclization of arylhydrazones of cross-conjugated enynones: synthesis of luminescent styryl-1 Itakhunov RN; Odin IS; Gusev DM; Grabovskiy SA; Gordon KV; Vologzhanina AV; Sokov SA; Sosnin IM; Golovanov AA Org Biomol Chem; 2022 Nov; 20(44):8693-8713. PubMed ID: 36285801 [TBL] [Abstract][Full Text] [Related]
4. Enantioselective synthesis of β-pyrazole-substituted alcohols through an asymmetric ring-opening reaction of meso-epoxides. Hu X; Gao B; Chu Y; Li W; Liu X; Lin L; Feng X Chemistry; 2012 Mar; 18(12):3473-7. PubMed ID: 22362613 [TBL] [Abstract][Full Text] [Related]
5. A copper-mediated cyclization reaction of hydrazine with enediynones providing pyrazolo[1,5-a]pyridines. Wu HC; Hwang LC; Wu MJ Org Biomol Chem; 2011 Feb; 9(3):670-2. PubMed ID: 21120244 [TBL] [Abstract][Full Text] [Related]
6. A theoretical study on the mechanisms of the reactions between 1,3-dialkynes and ammonia derivatives for the formation of five-membered N-heterocycles. Wang Y; Wei D; Zhang W; Wang Y; Zhu Y; Jia Y; Tang M Org Biomol Chem; 2014 Oct; 12(38):7503-14. PubMed ID: 24999759 [TBL] [Abstract][Full Text] [Related]
8. Reactivity of Cross-Conjugated Enynones in Cyclocondensations with Hydrazines: Synthesis of Pyrazoles and Pyrazolines. Golovanov AA; Odin IS; Gusev DM; Vologzhanina AV; Sosnin IM; Grabovskiy SA J Org Chem; 2021 May; 86(10):7229-7241. PubMed ID: 33955756 [TBL] [Abstract][Full Text] [Related]
9. Stereoselective synthesis of cis- or trans-3,5-disubstituted pyrazolidines via Pd-catalyzed carboamination reactions: use of allylic strain to control product stereochemistry through N-substituent manipulation. Giampietro NC; Wolfe JP J Am Chem Soc; 2008 Oct; 130(39):12907-11. PubMed ID: 18774811 [TBL] [Abstract][Full Text] [Related]
10. Synthesis of Trifluoromethylated Pyrazolidines, Pyrazolines and Pyrazoles via Divergent Reaction of β-CF Wei L; Ding S; Liu M; Yu Z; Xiao Y Org Lett; 2021 Oct; 23(20):7718-7723. PubMed ID: 34543037 [TBL] [Abstract][Full Text] [Related]
11. Synthesis of 3,5-disubstituted pyrazoles via Cope-type hydroamination of 1,3-dialkynes. Wang L; Yu X; Feng X; Bao M J Org Chem; 2013 Feb; 78(4):1693-8. PubMed ID: 23356512 [TBL] [Abstract][Full Text] [Related]
12. Preparation of 3,5-disubstituted pyrazoles and isoxazoles from terminal alkynes, aldehydes, hydrazines, and hydroxylamine. Harigae R; Moriyama K; Togo H J Org Chem; 2014 Mar; 79(5):2049-58. PubMed ID: 24512630 [TBL] [Abstract][Full Text] [Related]
13. 3,5-diphenyl-1H-pyrazole derivatives. XI. N-aryl-5(3)-phenyl-4-(3,5- diphenyl-1-pyrazolyl)-3(5)-pyrazole amines, 5-substituted 4,5-dihydro-3-phenyl-4-(3,5-diphenyl-1-pyrazolyl)-1H-pyrazoles and 2,6-disubstituted 1,6-dihydro-4- phenyl-5-(3,5-diphenyl-1-pyrazolyl)pyrimidines with antipyretic, antiinflammatory and other activities. Bruno O; Ranise A; Bondavalli F; Schenone P; D'Amico M; Filippelli A; Filippelli W; Rossi F Farmaco; 1993 Jul; 48(7):949-66. PubMed ID: 8397678 [TBL] [Abstract][Full Text] [Related]
14. Pyridines and pyrazolines from salicylic acid derivatives with propenone residue and their antimicrobial properties. Grant N; Mishriky N; Asaad FM; Fawzy NG Pharmazie; 1998 Aug; 53(8):543-7. PubMed ID: 9741063 [TBL] [Abstract][Full Text] [Related]
15. 1,3-diketones from acid chlorides and ketones: a rapid and general one-pot synthesis of pyrazoles. Heller ST; Natarajan SR Org Lett; 2006 Jun; 8(13):2675-8. PubMed ID: 16774229 [TBL] [Abstract][Full Text] [Related]
16. Synthesis, antimicrobial activity and conformational analysis of novel substituted pyridines: BF(3)-promoted reaction of hydrazine with 2-alkoxy pyridines. Goda FE; Abdel-Aziz AA; Attef OA Bioorg Med Chem; 2004 Apr; 12(8):1845-52. PubMed ID: 15051053 [TBL] [Abstract][Full Text] [Related]
17. Antimycobacterial evaluation of novel [4,5-dihydro-1H-pyrazole-1-carbonyl]pyridine derivatives synthesized by microwave-mediated Michael addition. Sedighi V; Azerang P; Sardari S Drug Test Anal; 2015 Jun; 7(6):550-4. PubMed ID: 25219796 [TBL] [Abstract][Full Text] [Related]
18. Nucleophilic Transformations of Lewis Acid-Activated Disubstituted Epoxides with Catalyst-Controlled Regioselectivity. Hubbell AK; Coates GW J Org Chem; 2020 Nov; 85(21):13391-13414. PubMed ID: 33076663 [TBL] [Abstract][Full Text] [Related]
19. Synthesis and crystal structures of N-substituted pyrazolines. Loh WS; Quah CK; Chia TS; Fun HK; Sapnakumari M; Narayana B; Sarojini BK Molecules; 2013 Feb; 18(2):2386-96. PubMed ID: 23429377 [TBL] [Abstract][Full Text] [Related]