show me the mechanism 2 Ph SDP EtOc. COZE! 0 s. 6 Eto₂c co₂Et 200 °C...
what is no.3? and please show me the mechanism.
tation of the pyridine from the dihydropyridine can be done with a variety of oxidizing! agents, the reaction is known as aromatization. In two separate procedures, we'll examine two oxidizing agents. Sulfur is a classical oxidizing agent for forming aromatic compounds from arated and partially saturated rings. Hydrogen sulfide is generated in this potentially smelly reaction. ph Eto C H X Ph CO2Et EtO2C -co₂Et 200 °C 1 N Nitrous acid...
Please show full mechanism with arrows and mechanism
name for this multi synthesis problem(C-G)
Me Me HX Me Et Me Et OH s-CI Me EtgN BuOK C 1) ВНн, 2) NaOH H2O2 MeOK Br2 F Me Et G O SIO
QUESTION 6 OET -CH3 Et Et + OH OH Et Select the major product (or no reaction) and mechanism for the reaction above. Compound A Compound B Compound Compound D No Reaction S1 E15N2 E2 QUESTION 7 Br Me OCH, Et oh + O MeOH Ph Ph Select the major product (or no reaction) and mechanism for the reaction above. Compound A Compound B Compound C Compound D No Reaction SN 1 SN2 E2
1. Give the structure(s) of the major product(s) expected from the following reactions. Assume standard aqueous workup conditions are used for product isolation. (40 points, 4 points for cach). H a) Sia,BH (1.0 eq) THF, 0 °C b) CH-CO-D, 60 °C OTS KOI-Bu -BuOH "Me 1a, LDA (1.0 eq). THF, -78 °C 16. TMSCI 2a, Toluene, heat 2b, H* acequous workup 1a, LDA, THF 2, LDA (1.0 q). THE 10. CH3COCI 2, CH,CH_CH_Br EtOC 1) HCI, MeOHXH, heat 2). Hz,...
Problem 6 Provide a detailed arrow-pushing mechanism for the following transformations. (A) 2 Me O OE NaoEt, EtOH Eto, (B) Hint: The cyclohexadienone depicted in the brackets is an intermediate along the reaction pathway to the phenol. 0 315 MeOMe NaoMe, MeOH | MeO₂C CoMe Co-Me Problem 8 Provide a synthesis for the depicted tropinone derivative from the indicated starting materials and any other reagents needed. The best synthesis will require no more than 3 steps. - NH2 Hoza i...
please show all steps
3. For the reaction shown below, only product A was obtained, whereas compound B was not formed. Write the reaction mechanism for the formation of product A and compare its mechanism to the mechanism for the formation of compound B. What conclusion can you draw from your comparison of the mechanisms that would explain why only A and not B is formed? Ph CO E Eto, Ph7 Ph L CO,E! CO,Et 1) NaOET, ETOH 2) HCI...
Me + pH = 5 HNMe 2 benzene, heat bo (DMSO) Meso Me Me Et N, CH2Cl2 HCI
CH OH HO 100% Me CO-Et HB 2 H-O EtOH AcOH 68% Br T8 Me 77% CH 0H 2 10% HCI in MeCN 1) TsCllpy 2) Nal LDA H (cat.) Me Me 75% CH-OH CH2 Me (8 6 Draw wedge/dash drawing of the following Fischer projection scheme 1-8 and assign the stereocenter(s) R or S absolute configuration
Show the mechanism and the product of [3+2] cycloaddition
(compound 6)
11. Show the mechanism and the product of [3+2] cycloaddition (compound 6) CO2Me Me [3+2] cycloaddition Me hydroxynicotine
6. Complete Gabriel synthesis of D,L-phenylalanine 1 NNa BCH(CO,Et)2 1. NaOET 2. BrCH Ph NaOH сон HCI + CO2 + . CO2H