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searching for Chiral auxiliary 26 found (56 total)

Dihydroxylation (1,996 words) [view diff] exact match in snippet view article find links to article

performed in the presence of a chiral auxiliary. The selection of dihydroquinidine (DHQD) or dihydroquinine (DHQ) as a chiral auxiliary dictates the facial selectivity

2,3-Wittig rearrangement (1,449 words) [view diff] exact match in snippet view article find links to article

diastereoselection based on an existing, established stereocenter, placement of a chiral auxiliary on the starting material whose configuration is unaffected by the reaction

Roskamp reaction (1,019 words) [view diff] no match in snippet view article find links to article

In organic chemistry, the Roskamp reaction is a name reaction describing the reaction between α-diazoesters (such as ethyl diazoacetate) and aldehydes

Han Zuilhof (448 words) [view diff] exact match in snippet view article find links to article

tiara[5]arenes, the first intrinsically chiral click reaction (no chiral auxiliary or catalyst needed), and the synthesis and structure elucidation of

Idarubicin (290 words) [view diff] exact match in snippet view article find links to article

directed towards anthracyclinone syntheses: The use of d-glucose as a chiral auxiliary in asymmetric Diels–Alder reactions". J. Saudi Chem. Soc. 17: 29–42

Larock indole synthesis (1,203 words) [view diff] exact match in snippet view article find links to article

substituted bislactim ethyl ether is generated by using Schöllkopf chiral auxiliary bis lactam ether with n-BuLi, THF, and 3-halo-1-9trimethylsily1)-1-propyne

Antillatoxin (1,439 words) [view diff] exact match in snippet view article find links to article

a triethylsilyl protecting group. This allowed for cleavage of the chiral auxiliary of the ester. TPAP oxidation followed by Still’s olefination and protonation

(2R)-2-Methylpent-4-enoic acid (220 words) [view diff] exact match in snippet view article

methylallylacetic acid. (R)-2-Methylpent-4-enoic acid can be synthesized using a chiral auxiliary such an oxazolidinone derivative, popularized by David Evans. One route

Longifolene (519 words) [view diff] case mismatch in snippet view article find links to article

Equivalence and an Enantioselective Birch Reduction-Alkylation by the Chiral Auxiliary Approach. Total Synthesis of (.+-.)- and (−)-Longifolene". The Journal

Izonsteride (259 words) [view diff] exact match in snippet view article find links to article

produce a somewhat more complex 5-a-reductase inhibitor relies on a chiral auxiliary to yield the final product as a single enantiomer. The first step starts

Sharpless asymmetric dihydroxylation (2,175 words) [view diff] case mismatch in snippet view article find links to article

situ from K2OsO2(OH)4 (an Os(VI) species) due to safety concerns. Chiral Auxiliary: This is usually some kind of cinchona alkaloid. Stoichiometric Oxidant:

Atropisomer (1,900 words) [view diff] exact match in snippet view article find links to article

chiral bridge that links the two aryl groups or through the use of a chiral auxiliary at one of the positions proximal to axial bridge. Enantioselective

Tyrosinol (113 words) [view diff] case mismatch in snippet view article find links to article

Aldol and Conjugate Addition Reactions Using Evans' Oxazolidinone Chiral Auxiliary". Tetrahedron Letters. 39 (17): 2655–2658. doi:10.1016/S0040-4039(98)00230-5

2-Methylundecanal (675 words) [view diff] exact match in snippet view article find links to article

either to their SAMP or RAMP chiral hydrazones using SAMP or RAMP as a chiral auxiliary. The chiral hydrazones are then metalated with lithium diisopropylamide

Glycosylation (3,448 words) [view diff] no match in snippet view article find links to article

solvent participation or the formation of bicyclic sulfonium ions as chiral-auxiliary groups. The non-enzymatic glycosylation is also known as glycation

Baylis–Hillman reaction (2,788 words) [view diff] exact match in snippet view article find links to article

catalyzed by a chiral amine base. Oppolzer's sultam can be used as a chiral auxiliary for an asymmetric MBH reaction. When an acrylate substituted with the

Metal-catalyzed cyclopropanations (1,251 words) [view diff] exact match in snippet view article find links to article

nitrogen-bridged cycloheptadienes. The use of methyl lactate as a chiral auxiliary on the vinyl diazoacetate led to moderate diastereoselectivity in the

Hydroamination (2,210 words) [view diff] exact match in snippet view article find links to article

Marks developed the first chiral hydroamination catalysts by using a chiral auxiliary, which were the first hydroamination catalysts to favor only one specific

Benzylic activation and stereocontrol in tricarbonyl(arene)chromium complexes (1,352 words) [view diff] exact match in snippet view article

methods use the complexed chromium tri(carbonyl) moiety essentially as a chiral auxiliary. Approach of the functionalizing reagent anti to the ----chromium tri(carbonyl)

Keck asymmetric allylation (1,612 words) [view diff] exact match in snippet view article find links to article

which can be resolved into its enantiomers quite easily and used as a chiral auxiliary for stereoselective Keck allylations, showing in some cases improved

Enders SAMP/RAMP hydrazone-alkylation reaction (2,515 words) [view diff] exact match in snippet view article find links to article

to be very promising. These new compounds consist of a new class of chiral auxiliary based on the carbamate structure and, therefore, no longer belong to

Aza-Cope rearrangement (5,704 words) [view diff] exact match in snippet view article find links to article

and racemic products are observed. This can be avoided by using a chiral auxiliary substituent on the amine. Reactions tethered to rings cannot undergo

Supramolecular catalysis (3,876 words) [view diff] exact match in snippet view article find links to article

enhanced into a chiral supramolecule by an addition of peripheral chiral auxiliary. In this case, the auxiliary diethyldiaminocyclohexane does not directly

Fine chemical (12,113 words) [view diff] exact match in snippet view article find links to article

(+)-α-phenylethylamine, crystallization, salt breaking and recycling of the chiral auxiliary, resulting in a theoretical yield of not more than 50%, with a one

Carboboration (1,638 words) [view diff] case mismatch in snippet view article find links to article

Alkene Scope, Applications in Dearomatization, and Stereocontrol via a Chiral Auxiliary". Angewandte Chemie International Edition in English. 58 (47): 17068–17073

Chiral analysis (6,792 words) [view diff] exact match in snippet view article find links to article

environment. The strategy is to make these variables to interact with a chiral auxiliary (chiral selector, CS) whereby it forms a diastereomeric complex which