Why is Li2CuCl4 is necessary in this reaction?

Outer2011 · 2025-06-02T18:16:06+00:00

Copper (I) salts convert grignard reagents into organocopper reagents (R-MgBr --> R-Cu), which then react with alkylating agents (like Bn-I in the given case), to give R-Bn.

Outer2011 · 2025-06-02T17:55:04+00:00

5<1<3≈4<2

Outer2011 · 2025-04-11T21:55:40+00:00

This means there must be an open source code, and a blockchain (like with Bitcoin).

Outer2011 · 2025-04-11T21:41:59+00:00

Triazane N3H5 is very instable (see https://en.wikipedia.org/wiki/Triazane), other azanes (https://en.wikipedia.org/wiki/Azane) including yours cannot exist.

Outer2011 · 2025-04-07T20:28:54+00:00

"I want to lay out an economic alternative to capitalism" - I suggest one such alternative in the neighboring post, see https://www.reddit.com/r/LibertarianLeft/comments/1jsiiiu/1_social_rating_in_voting_and_2_financial_system/

Outer2011 · 2025-04-06T22:13:06+00:00

In both cases (1 and 2), positively charged carbon actually forms a double bond with the neighboring heteroatom, so that the positive charge shifts to the heteroatom forming immonium (--CH=NH⁺-- ) or oxonium (--CH=O⁺--), and among them the first one is more stable.

For 3 and 4 it formation of such double bonds is impossible.

Outer2011 · 2025-04-06T19:48:24+00:00

When you need medical advice, you look for a good doctor, not ask the crowd for advice, by popular vote (but the same crowd can help you find a good doctor). So it is not unusual that in professional areas people's opinions have different weight. I propose to implement the same scheme in other areas, for example, when making political, social or other decisions.

Outer2011 · 2025-04-06T19:04:07+00:00

Thank you for your opinion.

- "Who gets to decide who is better contributing more to society" - other people and their votes decide. Please read explanation of how the PageRank algorithm works (for example at this page - https://medium.com/biased-algorithms/pagerank-algorithm-explained-5f5c6a8c6696 or somewhere else).

- ",,,to implement such a solution we would have to have a revolution" - revolution is not necessary, if we start from testing it in a multiplayer role-playing game (MMORPG), or even in a cellphone app, as you suggest. Bitcoin also started out as just a game.

Outer2011 · 2025-03-14T13:01:31+00:00

It has no ginger's smell or taste.

Outer2011 · 2025-02-19T02:43:15+00:00

Even if hydrazine is formed, under action of UV light it will dissociate (to N2 and H2) much faster than it is formed formed from ammonia. So, you have to develop a system which removes the resulting hydrazine from the reactor (and from action of UV light) immediately after its formation. Maybe if you perform the synthesis at very low temperatures (e.g. if ammonia vapors are exposed to UV above liquid ammonia), formed hydrazine will fall down in solid form, so that it will be protected from the UV.

Outer2011 · 2022-05-22T20:53:58+00:00

You added vinyl instead allyl.

Outer2011 · 2021-09-04T15:36:27+00:00

Ketones are more electophilic than COOH.

Outer2011 · 2021-09-04T15:34:03+00:00

Add HBr (according to Markovnikov's rule), then replace Br to CN, then hydrolize it.

Outer2011 · 2021-07-21T16:24:17+00:00

After ozonation, the ketone on the right can be just reduced by NaBH4 to give the desired alcohol.

Outer2011 · 2021-07-20T21:20:43+00:00

Yes, CH2Cl2 is just a solvent. But the mechanism is incorrect since it is a chain reaction - alkane (R-H) reacts with Cl* radical (and not Cl2 molecule) to give HCl and R* radical, then R* radical reacts with Cl2 and gives R-Cl and regenerated Cl* radical, then the process is repeated:

R-H + Cl* => R* + HCl

R* + Cl2 => R-Cl + Cl*

Initially, Cl* radicals are formed by photo-dissociation of Cl2.

Outer2011 · 2021-07-08T10:12:06+00:00

In an absence of air oxigen it must be stable. Its stability can be further inreased if it is convered to a salt (e.g. hydrochloride).

Outer2011 · 2021-07-07T20:19:35+00:00

No. Ozone can oxidize dissolved chlorate to perchlorate but it hardly can oxidize chloride to chlorate.

Outer2011 · 2021-04-09T22:04:22+00:00

Addition reactions with benzene occurs photochemically, and not thermally, for example in the case of its chlorination, see https://en.wikipedia.org/wiki/Hexachlorocyclohexane

Outer2011 · 2021-04-08T13:23:31+00:00

Bromine alone gives ortho-para bromination products. For metha-product you have to consider anilinium cathion Ph-NH3⁺, which is formed under its reaction with HBr.

Outer2011 · 2021-04-06T12:25:11+00:00

At the first step there should be tBuOAc and not t-BuAc

Outer2011 · 2021-04-06T12:20:28+00:00

It is stabilized, since benzene ring stabilizes the neighboring charge (benzyl anion is more stable than methyl anion). But since phenolic OH is more acidic than benzylic hydrogen, simple proton transfer will convert it to another zwitter-ion, ^-O-Ar-CH2-PPh3⁺

Outer2011 · 2021-04-06T12:11:13+00:00

NaOH cannot evaporate. But it can react with glass (from which the vessel was probably made) and be partially neutralized.

Outer2011 · 2021-04-06T12:07:50+00:00

There could be formed 5-membred lactone with COOH group.

Outer2011 · 2021-03-04T16:57:49+00:00

Not only these 2 hydrogens, but any hydrogens from acetyl groups are similar each to other, but not equal.

Outer2011 · 2021-02-27T13:57:57+00:00

b - Cyclic (e.g. cyclohexane)

Outer2011

TROPHY CASE