WebL-Selectride, THF, reflux, 3 h; (iv): nPrSNa, DMF, reflux, 4 h; (v): KOH, ethylene glycol, 210 °C; (vi): triphenylmethyl chloride, CH2Cl2, Et3N. The 3-O-demethylation of morphine alkaloids has proven difficult in general (tedious work-ups, poor chemical yields). With some thevinols this reaction was readily accomplished by the use of

A question about L-Selectride workups... : r/chemistry - reddit

WebReduction of diazo esters with L-selectride or tributylphosphine affords the corresponding hydrazones in good yields. Both reducing agents give anti-hydrazones as the majo … Versatile electrophiles N-acylhydrazones are synthesized via diazotization, reduction, and acylation of alpha-amino acid esters. WebThe Standard Oil of Ohio Company (SOHIO) process is the oxidation/ammoxidation of propene over bismuth/molybdate catalysts. Studies in the heterogeneous systems show that bismuth is involved in the rate-determining hydrogen abstraction from propene in both cases, and may be involved in later steps of the process as well. Model studies support … peoplestrong raymond

Improved and Reliable Synthesis of …

WebBorane-trimethylamine is an efficient reducing agent for the selective methylation and formylation of amines with 1 atm CO 2 under metal-free conditions. 6-Amino-2-picoline … Web26 mrt. 2014 · Thus, the L-selectride reduction of 4- tert -butylcyclohexanone is under kinetic control. The enzyme reduction reaction favored the S configuration product in 10% enantiomeric excess and 44% enantiomeric excess. The ethyl acetoacetate contains both a ketone and an ester functional group. Web1 jan. 1978 · Reduction of 4-cholesten-3-one Q) with L-Selectride at -78did not yield the desired product, but instead gave the g-allylic alcohol as the predominant product. When … toilet testing 2013