syn- and anti-addition are different ways in which substituent molecules can be added to an alkene (R2C=CR2) or alkyne (RC≡CR). The concepts of syn and...

prefer to give the anti-addition product with high selectivity and some yield the syn-addition product. The outcome of syn and anti- addition products is determined...

is not coded by DNA and is very rare in nature. In alkene addition reactions, syn addition to a trans alkene, or anti addition to a cis alkene, gives...

contrast to the preference for syn adducts typically observed in enolate-based aldol additions, these aldol additions are anti-selective. In aqueous solution...

is effectively functionalized with a nucleophile and an electrophile with syn:anti ratio of 8:1 and 97% enantiomeric excess.[3] This principle is also...

process results in the syn addition of a hydrogen and a hydroxyl group where the double bond had been. Hydroboration–oxidation is an anti-Markovnikov reaction...

cyclohexanone and β-nitrostyrene sketched below, the base proline is derivatized and works in conjunction with a protic acid such as p-toluenesulfonic acid: Syn addition...

suprafacial-suprafacial (syn/syn stereochemistry) in most cases. Very few examples of antarafacial-antarafacial (anti/anti stereochemistry) reactions...

free radical mechanism and is not stereospecific, i.e. H and OH may be syn or anti to each other. Oxymercuration followed by reductive demercuration is...

diastereoselectivity (syn versus anti, see above) must be considered. Addition takes place via an SE' mechanism involving concerted dissociation of tin and C-C bond...

to magnesium. The addition is syn unless a coordinating group is nearby in the substrate, in which case the addition becomes anti and yields improve. (6)...

weak association of the alkyne and HCl. Such a mechanism is consistent with the predominantly anti addition (>15:1 anti:syn for the example shown) of the...

can generate both the syn and anti ladderane products depending on the reaction conditions. The first step in forming the syn product involves the generation...

the amine and the methyl groups on boron. There are situations where seemingly identical conformations are not equal in strain energy. Syn-pentane strain...

groups gives the anti-diol. This outcome is the opposite of that of the related Woodward cis-hydroxylation which gives syn addition. Charles Prévost (1933)...

Article Miles, R. Brandon; Davis, Chad E.; Coates, Robert M. (2006). "Syn- and Anti-Selective Prins Cyclizations of δ,ε-Unsaturated Ketones to 1,3-Halohydrins...

Mannich reaction. It diastereoselects the syn adduct, with greater effect for larger aldehyde substituents; and enantioselects the (S, S) adduct. A substituted...

ethylene ligand, an internal (syn-) pathway. Later, stereochemical studies by Stille and coworkers support an anti-addition pathway, whereby free hydroxide...

true frankincense: Boswellia sacra (syn. B. bhaw-dajiana, syn. B. carteri), B. frereana, B. serrata (B. thurifera), and B. papyrifera. Resin from each is...

then replies to those requests, receives the initial SYN packet of the scanner and sends a SYN/ACK in response. It does not open a socket or prepare...

racemates. Whether the anti-diastereomer or the syn-diastereomer is built depends largely on reaction conditions, substrates and Lewis acids. The archetypical...

nitrous acid molecule can adopt both a syn and an anti form. The anti form predominates at room temperature, and IR measurements indicate it is more stable...

less general. Hydrogenation of imines is complicated by both syn/anti isomerization and tautomerization to enamines, which may be hydrogenated with low...

stereocenters have an anti- relationship, both models predict the same diastereomer (the stereoreinforcing case). However, in the case of the syn-substrate, the...

June 5, 2016. Kock, Ned; Jung, Yusun; Syn, Thant (2016). "Wikipedia and e-Collaboration Research: Opportunities and Challenges" (PDF). International Journal...

(often abbreviated chemo, sometimes CTX and CTx) is the type of cancer treatment that uses one or more anti-cancer drugs (chemotherapeutic agents or...

dihydroxylation of alkenes because of its reliability and efficiency with producing syn-diols. Since it is expensive and toxic, catalytic amounts of OsO4 are used...

assembled through addition of non-racemic allenylmetal reagents to (S)-3-silyloxy-2-methylpropanal to generate both syn/syn and syn/anti adducts. The central...

dihalogen syn isomer and anti isomer, which is not the case. They also asserted that a positively charged halogen atom is isoelectronic with oxygen and that...

Zachary L. (2009). "Synthesis of Bioactive Natural Products by Asymmetric syn- and anti-Aldol Reactions". Synthesis. 2009 (17): 2992–3002. doi:10.1055/s-0029-1216941...