"I am not retiring, it is more just working through how I would proceed.
"In general, I would proceed very carefully on this," Ms. Raimondo wrote.
If they confirmed my assessment, I would proceed; otherwise, I would wait further.
Regardless of Co surfaces considered, the CO activation is the rate-limiting step of methanation reactions, which would proceed through the H-assisted pathway on Co (0 0 0 1), whereas through both direct and H-assisted pathways on more active Co (10ˉ12) and (11ˉ20) surfaces.
Spock would save his friend, and the two would proceed through V'ger.
Norwegian authorities said late Saturday that the evacuations would proceed through the night.
Finally, the Manchester experiment would not take what MCC leaders called "the grand approach with large audiences and spectacular publicity," but would proceed through informal talks to small groups, short items in local newspapers, and short pamphlets.
Hypothesizing that the reaction would proceed through a radical-based oxidative addition to Ni, a xanthate was chosen as a potential leaving group because of its propensity toward radical cleavage in Barton McCombie-type transformations.
However, an alternative pathway, namely the water-assisted deprotonation of 35 with concomitant syn-migration, eventually leading to 41, would proceed through the transition state 39 that is half-way down on the energy scale compared to 38, indicating that this pathway would be favored if the syn addition mechanism operated.
Deprotonation of 35 to generate 37, which in principle could transfer the hydroxy group to the alkene ligand, would proceed through the transition state 38 but this species is rather high in energy (33.4 kcal mol−1), well above the experimentally overall observed value (22.4 kcal mol−1).
The proposed mechanism is also consistent with the observation that hydrazones 2 a and 2 b converge to THF 3 a and ent -3 a with the same diastereoselectivity (Table 1, entries 1 and 2), as the two reactions would proceed through enantiomeric vinyldiazenium intermediates.
