I think it is B, but I am not sure....
I think it is B, but I am not sure.... 6. Which of the following molecules...
1. Which of the following molecules has the lowest strain energy? a. Cyclobutane b. Cyclohexane c. Cycloheptane d. Cyclopropane 2. Which of the following arranges the groups in order of decreasing priority according to the sequence rules? a. CH3 > CH2CH3 > CH2OH > CO2H c. CH2OH > CO2H > CH2CH3 > CH3 b. CH3 > CH2CH3 > CO2H >CH2OH d. CO2H > CH2OH > CH2CH3 > CH3 3. Which of the following structures represent a meso compound? a. b....
Assign R, S configurations to each indicated chirality center in the molecules below. B. COOH A. OH HOW -H CHANH HNCH HO norepinephrine alamine HOC / OH CH3 не HC HÓ COH tartaric acid CH2 dihadrocarpone The configuration of this carbon atom (A) is · (2 pts.) The configuration of this carbon atom (B) is _ . (2 pts.) The configuration of this carbon atom (C) is . (2 pts.) . The configuration of this carbon atom (D) is __....
4 a) Identify which molecules are chiral and which are achiral. For the chiral molecules stale the maximum mumber of possihle sterooisomers thal are possible for he molocales polats) H H coH EL b) For the following pairs of molecules give the confimuration of each chiral center aand indicate the relatioeship between the two molecules as enantiomers, diastereomers or same molecule: (13 points) H .CHs H. CM3 C 3 (O,H N CHs C9H NHs -H H -H + Ch H...
4. Put an asterisk (*) next to each chiral center in the structure of erythronolide B, a metabone precursor to the commercial antibiotic, erythromycin. H3C .CH OH CH3 нс, Toi Erythronolide R Нас Анас OH 5. Determine whether the chirality centers in the following molecules have Rors configuration. (a) H (b) OCH2CH3 (c) OH NO-C-OH HC-CH3 H₃C-C-CH₂OH (a) HOH (b) c) HOCHZ HOCH2 CO2H 6. Are the following molecules chiral or achiral? If they are chiral, put an asterisk next...
I answered b. as Enantiomers and d. as meso. I am unsure if this is correct and any help would greatly be appreciated. Thanks! 13. Describe each pair of molecules below as enantiomers, diastereomers, identical (1 chiral carbon only), or a meso compound. CHH H Br HC+Br C- BrH,C- Br Ch ci a. CH, CI-OH HOCH bH CH Br H HBr H,C Br Br cң, нс Mcң, немн CI CH.CH - HC - Br H₂CTC d. CH.CH, Hc Bro
B. STEREOISOMERS Star the chiral carbon in each of the following molecules. Then indicate how many forms exist for those compounds with at least one chiral carbon. OH OH OH OH O CH3 a) b) HOC2- CH-CH-CH-CH-CH CH3-CHCH2OH OH c) CHCH3 d) CH3CCH2CH3
I think it is C, but I am not sure.... 3. What would be the complete name of the following? CH3 Br HI C-CH2-c Нас A) (20,45)-2-bromopentane B) (R)-2-bromo-4-methylpentane C) (S)-4-bromo-2-methylpentane D) (2R,4R)-2-bromo-4-methylpentane E) (S)-2-bromo-4-methylpentane
Which of the following shown below represent a pair of enantiomers? CN (a) Br HAC-C-CN (b) CO2H HC-Br HC-CH? Br HC-CN CO2H (c) (d) CO2H CH3 он H -OH HC-CH2CH3 CH3CH H3C CH3 -CO2H H H2N H3C CH H2N 2 o
1. What amino acids do the following abbreviations stand for? Draw the structure of each. a) lle b) Thr c) Gin 2. Name and draw the structures of the amino acids that fit these descriptions: a) Contains an isopropyl group b) Contains a secondary alcohol group 3. Which of the following objects is chiral? a) A pair of scissors b) A comb c) A drinking glass 4. What does the term achiral mean? Give two examples involving organic structures.. 5....
e. 4-HC-C6H4-NH-C(O)-CH3 + Cl2/H4C-COH ------> H30* f. 4-nitro-1-chlorobenzene + NaOH H2O g. Ph-CH2-CH2-CH2-CO2H + AICI: -------> h. All trans-H2C=CH-CH=CH-OCH3 + H2C=CH-C(O)-H i. 1-bromo-3-chlorobenzene + HNO3/H2SO4 j. CsH5-CH=CH-CH3 + HBr/peroxides --------> H30* k. Ph-CH2-CH3 + KMnO./NaOH/A ----------> L. CoHs-CCl3 + Bry/FeBr ---------- H30* m. Ph-Br + KNH/-33 °C --------