Sketch Tutorials 

Methane (structure #1). Tap C and double tap the screen (#1). Hydrogens do not need to be drawn, as they are added automatically when the 2D drawing is converted into a 3D model.

Propane (structure #2). Draw the CC bond in #1 represented by the red arrow (touch C, drag finger to create bond, and lift). Next, draw the CC bond represented by the blue arrow. (Both bonds can also be drawn using a single draw-pause-draw operation).

Acetone (structure #3). Tap O. Draw the CO double bond represented by green arrows in #2. Either draw one bond and then re-draw it, or draw both bonds using a single draw-pause-draw operation, that is, pause after the first bond has been drawn without lifting your finger from the screen and then drag back over the bond.

 

cis-Stilbene (structure #3)

Tap C. Draw a CC double bond as represented by the red arrows in #1. Tap  and draw the bonds represented by the blue arrows in #2. Tap on to “clean up” the drawing. If the “cleaned up” drawing is not satisfactory, immediately tap .

 

 


Cyclohexane (structure #1). Tap  and double tap the screen.

Cyclohexene (structure #2). Start with structure #1. Tap C and re-draw the CC bond represented by the red arrow in drawing #1.

trans-Decalin (structure #3). Start with structure #1. Tap . Double tap one bond in cyclohexane (#1) to fuse a second ring to the first (#3). While you have not specified that the two rings are to be trans fused, this is the default choice when this 2D drawing is converted into a 3D model.

cis-Decalin (structure #5). Start with structure #3. Tap H and draw the two CH bonds indicated by red arrows in #3. Tap  and re-draw each CH bond as indicated by blue arrows in #4. Tap  to give a more attractive sketch.

 

Nicotine. Tap  and double tap the screen (#1). Tap , touch a benzene ring carbon and draw one bond to add the five-member ring (#2). Tap N and double tap the appropriate carbon in each ring (#3). Tap C and draw the NC bond indicated by the red arrow in #3.

 


axial-Methylcyclohexane (structure #4)

Tap  and double tap the screen (#1). Tap C and draw the CC bond represented by the blue arrow in #1. Tap  and re-draw this CC bond as indicated by the blue arrow in #2. Double tap the wedge bond. It will be labeled ax (if it is labeled eq, double tap the wedge again.)

 

trans-1,3-Ethylmethylcyclohexane (ethyl equatorial) (structure #5)

Tap  and double tap the screen (#1). Tap C, touch one ring carbon and draw the CC bond represented by the red arrow in #1. Next, touch the appropriate ring carbon and draw both of the CC bonds represented by the blue arrows in #1 (use a single draw-pause-draw operation). Tap  and re-draw the bond represented by the blue arrow in #2. Tap  and re-draw the bond represented by the red arrow in #3. Double tap the wedge twice. The first time it will be labeled ax. The second operation replaces this label with eq.

 

Cyclohexanone (structure #2)

Tap  and double tap the screen (#1). Tap O and draw a CO bond and then re-draw it as indicated by the red arrows in #1 (use a single draw-pause-draw operation).

 

Substituted Benzene Derivatives: Anisole (A = OCH3), Nitrobenzene (A = NO2)

Tap  and double tap the screen (#1). Next, define a substituent and add it to the ring as shown in #2. Tap Ele/Grp (below H) to bring up the keyboard (if Ele/Grp has already been defined, double tap the icon). Type the appropriate symbol. (Methoxy or OCH3 can be represented by OMe or ome or OCH3 or och3. Nitro or NO2 can be represented by NO2 or no2.) Press return. Touch one ring carbon and draw a carbon-substituent bond. Tap on to “clean up” the drawing. If the “cleaned up” drawing is not satisfactory, immediately tap .

 

Coumarin (structure #4)

Tap  and double tap the screen (#1). Tap  and double tap a benzene ring bond to fuse the rings together (#2). Tap C and re-draw the bond represented by the red arrow in #2. Tap O, touch the ring carbon indicated by the blue arrows in #2 and draw the bonds represented by these arrows (use a single draw-pause-draw operation to draw and re-draw this unit). Finally, double tap the benzylic carbon to replace it with oxygen (#4).

 


Protonated 1-Aza-adamantane (structure #4).

Tap C and draw the ring represented by the six arrows in #1 (use a single draw-pause-draw operation). Next, draw the three axial bonds represented by blue arrows in #2, then draw three more CC bonds (green arrows) connecting to a common site (#3). Tap N and double tap one bridgehead carbon to replace it by a nitrogen. Tap  and double tap nitrogen. If  or  appears as the icon instead, tap the marker until  appears. iSpartan assumes that this means that nitrogen is to be protonated and will be replaced by NH+ in the drawing.

                       

Indigo (structure #5)

Tap  and double tap screen (#1). Touch a ring C and draw one bond to add a second ring (#2). Tap C. Re-draw the three CC bonds indicated by single arrows in #2. Next, draw the two CC double bonds represented by double arrows (use a single draw-pause-draw operation for each double bond). Add N and O to the drawing as indicated in #3. Tap the desired atom icon then double tap each carbon that needs to be replaced. Tap  and double tap each endocyclic CC double bond in #4 to fuse two rings together (#5).

 


Acrylonitrile (structure #3)

Tap C and draw all of the bonds represented by blue arrows in #1 using a single draw-pause-draw operation (begin by re-drawing one bond and then add a single bond). Next, tap N and add a CN triple bond to the methyl carbon. Tap the methyl carbon, draw and re-draw the CN bond represented by red arrows in #2 (use a single draw-pause-draw operation). Tap on to “clean up” the drawing.

 

Ethinamate (structure #4)

Tap  and double tap the screen (#1). Add an ethynyl group. Tap C and draw all of the bonds represented by blue arrows in #2. If you use a single draw-pause-draw operation to draw all of these bonds, you may find it easier to draw a “bent” ethynyl group. Add the carbamate group. Tap  (if the arrow is pointed at carbon, tap the icon again to move the arrow to oxygen as shown) and draw the bond represented by the red arrow in #2. Tap N and draw the bond represented by the red arrow in #3. Tap on to “clean up” the drawing. If the “cleaned up” drawing is not satisfactory, immediately tap .

 

Menthol (structure #4)

Tap  and double tap the screen (#1). Add atoms and defined groups to this ring. Tap C and draw the bond represented by the blue arrow in #2. Tap O and draw the bond represented by the red arrow. Next, define an isopropyl group and add it to the drawing as shown in #2. Tap Ele/Grp, type ipr and press return, and draw the bond represented by the green arrow (#3). Tap  or  as needed and re-draw all of the bonds in #4 that require stereochemical markers.

 

a-Thujone (structure #3)

Tap  and double tap the screen (#1). Tap C and draw all of the bonds represented by arrows in #1. Draw all of the blue arrows using a single draw-pause-draw operation. Do the same for the red arrows. Add O and H to the drawing as indicated in #2. Tap the desired atom icon then double tap each carbon that needs to be replaced. Next, define an isopropyl group and add it to the drawing as shown in #2. Tap the Ele/Grp icon (or double tap on whatever element of group is shown), type ipr and press return, then double tap the appropriate carbon atom (#3). Tap  or  as needed and re-draw all of the bonds in #3 that require stereochemical markers.

 

Androsterone (structure #4)

Tap , double tap the screen, then double tap two ring bonds to fuse two additional rings (#1). Tap  and double tap the appropriate ring bond to fuse this ring (#2). Tap C and draw all of the bonds represented by arrows in #2 (draw both red arrows using a single draw-pause-draw operation). Add O and H to the drawing as indicated in #3. Tap the desired atom icon then double tap each carbon that needs to be replaced. Tap  or  as needed and re-draw all of the bonds in #4 that require stereochemical markers.

 

Camphor (structure #5)

Tap C and draw the ring represented by the six arrows in #1 (use a single draw-pause-draw operation). Next, add a bridging carbon by drawing the two bonds represented by arrows in #2 (use a single draw-pause-draw operation). Next, draw three methyl groups as shown in #3, and then tap O, and use draw-pause-draw to introduce a CO double bond as indicated in #4. Tap  and re-draw the bond to the bridgehead methyl group (#5).

 

Morphine (structure #4)

Tap  and double tap the screen (#1). Tap  and double tap appropriate ring bonds to fuse two additional rings (#2). Tap C, then draw (or re-draw, as needed) all of the bonds represented by arrows in #2. Draw all of the red arrows using a single draw-pause-draw operation. Do the same for the two blue arrows. Add O, N, and H to the drawing as indicated in #3. Tap the desired atom icon then either double tap the carbons that need to be replaced or draw bonds where atoms need to be added. Tap  or  as needed and re-draw all of the bonds in #4 that require stereochemical markers (draw the red wedges first and the CC bond connecting these wedges will be adjusted automatically).