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- stereospecific, occurring via syn addition to give the cis-alkene. For example the hydrogenation of acetylenedicarboxylic acid using Lindlar catalyst...3 KB (360 words) - 14:36, 23 September 2023
- A Ziegler–Natta catalyst, named after Karl Ziegler and Giulio Natta, is a catalyst used in the synthesis of polymers of 1-alkenes (alpha-olefins). Two...17 KB (1,843 words) - 20:03, 9 April 2024
increases the activity of traditional catalysts and allowed the development of highly stereospecific catalysts for the production of polypropylene. Magnesium...22 KB (2,089 words) - 11:47, 10 June 2024- Homogeneous catalysis (redirect from Homogeneous catalyst)Ziegler-Natta catalysis. Heterogeneous catalysts dominate, but many soluble catalysts are employed especially for stereospecific polymers. Olefin metathesis is...8 KB (894 words) - 10:52, 16 January 2024
- Muelhaupt, R.; Rieger, B.; Waymouth, R. M., "Stereospecific Olefin Polymerization with Chiral Metallocene Catalysts", Angew. Chem. Int. Ed. Engl. 1995, 34,...8 KB (958 words) - 21:54, 26 June 2022
- Single-Site Metal Catalysts". Chemical Reviews. 100 (4): 1223–1252. doi:10.1021/cr990286u. PMID 11749265. Jayaratne, K.; Sita, L (2000). "Stereospecific Living Ziegler−Natta...37 KB (4,445 words) - 05:32, 3 June 2024
synthesis of poly-DL-lactide (PDLLA), which is amorphous. Use of stereospecific catalysts can lead to heterotactic PLA which has been found to show crystallinity...43 KB (4,953 words) - 18:52, 14 June 2024
1021/ja301685r. PMID 22607637. Chen,K (2001). "Stereospecific alkane hydroxylation by non-heme iron catalysts: mechanistic evidence for an Fe=O active species"...13 KB (1,564 words) - 11:07, 31 August 2021- Suzuki reaction (section Metal catalyst)or Suzuki coupling is an organic reaction that uses a palladium complex catalyst to cross-couple a boronic acid to an organohalide. It was first published...34 KB (3,851 words) - 03:55, 15 February 2024
- solvents. With the development in the 1980s of more active and stereospecific supported Z-N catalysts, the proportion of atactic polymer to crystalline isotactic...5 KB (746 words) - 05:18, 19 April 2023
- mixture of stereoisomers during a non-stereospecific creation of a new stereocenter or during a non-stereospecific transformation of a pre-existing one...8 KB (1,006 words) - 18:00, 19 January 2024
The rearrangement of aldoximes occurs with stereospecificity in the gas phase and without stereospecificity in the solution phase. A few methodologies...14 KB (1,419 words) - 04:50, 28 December 2023- 1,3-Dipolar cycloaddition (section Stereospecificity)transition state. Stereochemistry: 1,3-dipolar cycloadditions are always stereospecific with respect to the dipolarophile (i.e., cis-alkenes giving syn-products)...65 KB (6,426 words) - 14:32, 7 March 2024
Zelder F (October 2016). "Inorganic Cyanide as Protecting Group in the Stereospecific Reconstitution of Vitamin B12 from an Artificial Green Secocorrinoid"...30 KB (2,638 words) - 05:07, 27 May 2024
differ in the stereochemistry of the products. SN1 leads to the non-stereospecific addition and does not result in a chiral center, but rather in a set...66 KB (8,031 words) - 11:55, 4 June 2024
660410129. Matsumoto, T.; Ichihara, A.; Ito, N. (1969). "A simple, stereospecific synthesis of dl-muscarine and dl-allomuscarine". Tetrahedron. 25 (24):...18 KB (1,882 words) - 14:44, 20 December 2023- Clark R. Landis (section AHF is Stereospecific)with Rh-based catalysts can produce stereospecific aldehydes. AHFs of alkenes, specifically enol esters and enamides, with Rh-BDP catalysts yield high concentration...14 KB (1,420 words) - 21:55, 12 March 2023
- Cossee, P. (1964). "Ziegler–Natta catalysis III. Stereospecific polymerization of propene with the catalyst system TiCl3---AlEt3". J. Catal. 3 (1): 99–104...3 KB (337 words) - 00:20, 1 January 2020
academic research. The homogeneous catalysts are often classified as Schrock catalysts and Grubbs catalysts. Schrock catalysts feature molybdenum(VI)- and tungsten(VI)-based...39 KB (4,096 words) - 05:27, 16 January 2024- Sonogashira coupling (section Catalyst variations)synthesis to form carbon–carbon bonds. It employs a palladium catalyst as well as copper co-catalyst to form a carbon–carbon bond between a terminal alkyne and...48 KB (5,436 words) - 08:05, 6 June 2024
- stereospecific catalyst (plural stereospecific catalysts) (physical chemistry) a catalyst that preferentially catalyzes the formation of one of a pair
- Hydrogenation of the double bond in alkenes requires a catalyst. This transformation occurs stereospecifically by synaddition and, when there is a choice, from
- originated in 1955 following Karl Ziegler's discovery of using a mixed metal catalyst to achieve polymerization of ethylene at low pressures using titanium tetrachloride