- What is the meaning of n-Pr and i-Pr? - Chemistry Stack Exchange
Apologies in advance, I have a background in physics, so this question might seem awfully simple Anyway, I am interested in the chiral spin selectivity effect in organic molecules, and have read a
- nomenclature - What are the practices to naming organic chemicals by . . .
Is there a preferred method to writing organic chemicals by abbreviation? I am finding it hard to decipher the methods I see in writing For example $\\ce{EtOH}$ is ethanol, which makes sense, but
- organic chemistry - Stereoselective enolate formation with different . . .
N(iPr)X2Et N (i P r) X 2 E t (very bulky) Maybe smaller bases as 1 or 2 usually give the trans-enolate, and bulkier bases such as 3 or even 4 affords the cis-enolate
- organic chemistry - Newman projections: how to tell which groups are . . .
Well, I think your book is wrong Read the extract: I guess what you're looking for are A-values The higher the A-value, the more "bulky" the group is considered So, the −SH S H, −Cl C l and −Br B r groups seem to be less hindering than the −iPr i P r group References: A-value, Wikipedia
- organic chemistry - Relationship between thermodynamics and steric . . .
I am investigating reactions with alkyl-substituted amines ($\\ce{R} = \\ce{Me}, \\ce{Et}, \\ce{^iPr}, \\ce{^tBu}$) and a second reagent, in which product Z is formed
- Which has higher priority according to Cahn-Ingold-Prelog priority . . .
For sBu and iPr this is easy The Roman numerals I, II, III, IV refer to the "spheres" that are talked about in the Blue Book, which denote the distance from the stereogenic centre Generally, this "distance" refers to the number of bonds: so Sphere I is one bond away from the stereogenic centre, and so on
- Is the i prefix for iso- italicised? - Chemistry Stack Exchange
See in particular Table II on page 406, which gives the following forms: iPr, iBu, s -Bu, and t -Bu (which is in line with the Blue Book) It says that if you choose these abbreviations, then explicitly defining them is unnecessary
- organic chemistry - Number of gauche interactions in an alkane . . .
The textbook states that (a) has 2 gauche interactions, (b) has 3 gauche interactions and (c) has 3 interactions But how do we determine this? I thought a gauche interaction would occur when two
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