methylene bridge

A related compound is 4-benzylpiperidine, in which the rings are separated by a methylene bridge.

One particular example is a 60-carbon fulleroid derivative that has a single methylene bridge.

Calixarenes exist in different chemical conformations because rotation around the methylene bridge is not difficult.

The substituent R next the amine methylene bridge is an electron-withdrawing group.

The molecule consists of a cyclohexene ring with a methylene bridge between C-3 and C-6.

Its structure consists of an aminopyrimidine and a thiazole ring linked by a methylene bridge.

It consists of a six-membered ring with alternating methylene bridges and thioether groups.

The first reaction gives a methylene bridge, and the second forms an ether bridge:

The overall symmetry of the molecule causes both methylene bridges to contain hydrogen atoms in exactly the same electronic environment.

Pillararenes are composed of hydroquinone units linked by methylene bridges at para-positions.

One possible mechanism for the rapid fragmentation is an internal hydride transfer from α-C2 to the methylene bridge between the heterocycles.

However, by the simple addition of a methylene bridge between the 1 and 6 positions, a stable, flat, aromatic molecule can be made and observed.

In barbaralane one ethylene arm is replaced by a methylene bridge and the dynamics are comparable to that of semibullvalene.

The hole size can be systematically adjusted by controlling the number of methylene bridges, m and n, in the arms connecting the two aminotroponiminate rings.

A crosslink formed by formaldehyde between two functional groups is theoretically and experimentally a non-reducible methylene bridge.

The methylenedioxy group consists of two oxygen atoms connected to a methylene bridge (-CH- unit).

The amine component has a quinuclidine skeleton and the methylene bridge in between the two components has a hydroxyl group.

After C-7 reduction and glycosylation, the C-8 methylene bridge is no longer activated for deprotonation, thereby making aromatization less likely.

It only works when the carbon adjacent to the carboxyl is a simple methylene bridge (an aliphatic carbon with no substituents).

It is an analogue of MDA where the heterocyclic 4-position oxygen from the 3,4-methylenedioxy ring has been replaced with a methylene bridge.

Cycloheptatriene is not aromatic, as reflected by the nonplanarity of the methylene bridge (-CH-) with respect to the other atoms.

The "nor-" prefix also includes the elimination of a methylene bridge in a cyclic parent compound, followed by ring contraction.

This unit may be better called "methylene bridge" or "methanediyl" to distinguish it from the doubly bonded methylene group.

It is a homologue of the amino acid cysteine, differing by an additional methylene bridge (-CH-).

The carbon skeleton is derived from cyclohexane ring with a methylene bridge in the 1,4- position, and is a bridged bicyclic compound.