-
replaced carbon in the
backbone of the
molecular structure.
Typical heteroatoms are
nitrogen (N),
oxygen (O),
sulfur (S),
phosphorus (P),
chlorine (Cl)...
- five
heteroatoms The
hypothetical chemical compound with five
nitrogen heteroatoms would be pentazine. Six-membered
rings with six
heteroatoms The hypothetical...
- (i.e. with "C"),
whereas heteroatoms are
always explicitly noted as such ("N" for nitrogen, "O" for oxygen, etc.)
Heteroatoms and
other groups of atoms...
-
double bonds (alkenes) or
triple bonds (alkynes). If
other elements (
heteroatoms) are
bound to the
carbon chain, the most
common being oxygen, nitrogen...
- atoms. It
should have the
maximum number of
heteroatoms. It
should have the
maximum number of
senior heteroatoms (in order: O, S, N, P, Si, B). For chains:...
- In chemistry, a
double bond is a
covalent bond
between two
atoms involving four
bonding electrons as
opposed to two in a
single bond.
Double bonds occur...
-
carbon atoms and
heteroatoms ("ring size") the
presence of any
double bonds the
nature of the
heteroatoms.
Notes on table:
Heteroatom priority decreases...
-
observed when Y = oxygen, but can also be seen with
other lone pair
bearing heteroatoms in the ring, such as nitrogen, sulfur, and phosphorus. The
exact method...
-
unsaturated substrates, both
olefinic or
aromatic and with or
without heteroatoms. Free-radical
reactions depend on one or more
relatively weak
bonds in...
-
These reactions are used to form carbon–carbon
bonds but also carbon-
heteroatom bonds. Cross-coupling
reaction are a
subset of
coupling reactions. Richard...
