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- Draw the structure of Ethyl 2-deoxoy-2-fluoro-a-D-galactopyranoside in: i) cyclized Fischer projection ii) in its most stable chair configuration iii) in its least stable chair confirmationConvert the following Fischer projections into tetrahedral representations, and assign R or S stereochemistry to the molecules on part a and b in the pictureAllenes are compounds with adjacent carbon-carbon double bonds. Many allenes are chiral, even though they don’t contain chirality centers. Mycomycin, for example, a naturally occurring antibiotic isolated from the bacterium Nocardia acidophilus, is chiral and has [α]D = -130. Explain why mycomycin is chiral.
- Org. Chem. 1. EA26. Can you please draw out all four , and explain what a stereoisomer is in relation ? ThanksRank the following groups in order of decreasing priority. −C≡CH, −CH(CH3)2, −CH2CH3, −CH=CH2Draw the products formed when CH3COCH2CH2CH = CH2 is treated with each reagent:(a) LiAlH4, then H2O;(b) NaBH4 in CH3OH;(c) H2 (1 equiv), Pd-C;(d) H2 (excess), Pd-C;(e) NaBH4 (excess) in CH3OH;(f) NaBD4 in CH3OH.
- Draw the Fischer projection for the final product when trans-2-butene reacts with mCPBA/H2O.a. Draw a three-dimensional structure for the following steroid. b. What is the structure of the single stereoisomer formed by reduction of this ketone wrth H2, Pd-C? Explain why only one stereoisomer is formed.(a) (S)-2-chlorobutane, draw any diastereomers.